7.3 idi diesel glow plug bypass manual glow plug button.

[@Pohnees]

Thanks bud, probably one of the more straight forward videos to doing this little switcharoo out there

[@worthshop]

Glad I am able to help people out and pass on some knowledge. Appreciate the comment, thanks for watching.

[@joeolvera333]

I couldn't see how you wired for the switch on the dash.can you walk us thru the wiring with a diagram from the relay to the switch

[@phillambert3043]

Wish you lived in Florida I could use some help finding a engine wiring harness for my 1987 F250 6.9 IDI. Keep making videos man I sure enjoy your knowledge and watching you keep these old trucks running.

[@worthshop]

I'd be glad to help out, hope your able to figure your project out. I would check ebay they have most the harnesses from time to time. They also have replacement glowplug harness tips and other parts you might need.

[@DOA.Diesel]

You only need two wire to run an idi.

[@jhehn3]

Yeah you don't need a whole new wire harness for an IDI, speaking from experience..... Just run a few new wires as needed. Most commonly replaced first is the wire that goes from the key to the starter relay.

[@jhehn3]

Super handy! Unfortunate about the button being obscured but as long as it works!!!

[@worthshop]

Right?! I was a bit disappointed, but it was still accessible so not a huge deal.

[@JorgeHernandez-kc4gz]

Thank bro, mine starts great when is cold, when it gets hot! I’m having this issue.. so I’m gonna try this, hope it works.

[@worthshop]

If it is having issues starting when hot this will not remedy your issue. More than likely your injection pump is going bad. To test that theory, dump cold water over the injection pump when it will not start. If it starts after being cooled off, you need to replace the pump. Good luck with your project, and God bless.

[@DMBLNDE423]

Love this short bus could be a great skoolie build.

[@worthshop]

Ya, I picked it up to fix and flip mostly. I knew it wasn't starting or running quite right at auction and the idi engines are ones I am experienced and knowledgeable about. Figure i can take care of the mechanicals and pass it on for someones adventure mobile. But also liked the wheel chair lift, thinking it will make a good moving truck. Tool boxes and some heavy items can be moved real easy. Appreciate the comments, thanks for watching.

[@nevin3123]

You’re the man!

[@worthshop]

Thanks for watching. One of the first modifications I recommend for any idi diesel is a manual glow plug button.

[@josemartinez4680]

Awesome video, I did same exact thing with my 6.9

[@worthshop]

Appreciate the comment, thanks for watching.

[@fredricstrandberg49]

Did as you did...but now i found my problem...my glow relay havent any 12v direct power like it should...from where does it get it 12volt...hope you can help me

[@David3Peterson]

I like his videos, there very helpful. I done mine like that after I burned up 2 buttons on da hit side 😞

[@worthshop]

Appreciate the comment. Definitely not on youtube to get rich or famous. Just enjoy encouraging others and providing useful information.

[@peterclark8182]

I installed a new controller and relay. Replaced all the GPs except 1 because it’s broken in the intake. Should the relay click? I pulled one GP and it isn’t heating… what could be the problem?

[@h20cycle1]

Very clear and easy to follow. Unfortunately, I must have done something wrong. My switch (button) does click the solenoid but no heating of glow plugs occurs. However, if I jump the two main posts, GP’s heat up great so I do have power to the solenoid (controller). Possible the power from that blue wire isn’t strong enough to heat my glow plugs? Glow plugs are brand new and tested as working.

[@h20cycle1]

Actually, thinking I may have a harness issue. Assumed GP’s warmed when I jumped the two posts because the truck started. Thinking now maybe she started for the first time in days because it was 85 degrees out. Looking at harness now.

[@worthshop]

Use a electric tester and test fir continuity through wires. You can also use a test light ground one end any put the other end inside one of your glow plug connectors. See if the light turns on when you cycle the glow plugs. The blue wire is just to turn on the wait to start light. White wire is the one that actually triggers the solonoid.

[@nonubz7877]

Hey there neighbor, really enjoying your vidyas here in Clarkston WA. We just picked up a 91 7.3, previous owner just replaced the glow plugs (motorcraft) but the relay just clicks with the key on, wait to start light goes off immediately and she needs the Cosby sauce to cold start. Bad relay or harness? Would the manual gp button be worth a shot in this case? I’ll test the glow plugs to be sure they’re good. Thanks and keep the dank content comin!

[@worthshop]

Hi 👋 Thanks for checking out my chanel. I personally am a fan of a manual glow plug button. It allows me to cycle the plugs myself, and only when needed. Also cheaper than replacing the relay when malfunctionin. Sounds like probably your relay is having trouble. So I'd definitely go for a manual button in that case, button and some wire is less than $10 the new relay closer to $100 good luck with your project. Have any more questions I will answer the best I can just ask.

[@nonubz7877]

Sounds like I should do the manual gp button anyways, appreciate your input and knowledge! I ohm’d out all the glow plugs and they’re at .5 and look new. The relay also looks new..the glow plug harness looks original so I’m going to replace that. Just installed a factory throttle cable and turned the pump up just shy of a couple flats. Boy howdy she’s a ripper now!

[@mike-of6fu]

Hey this is off topic I have been watching your videos your doing a great job I have a 1986 250 with the 6.9 idi I'm having trouble with a knocking sound that just decided to start out of nowhere It's not bottom end it sounds like a bad injector or a collapsed lifter but I'm not sure and I really don't want to take the engine apart with out having some idea Motor runs and revs fine sound is very faint at idle and you hear it more when reved any ideas would be greatly appreciated Thank you

[@worthshop]

In my experience a knock is usually caused by a bad injector in the idi engines. You can get a automotive stethoscope and listen at tge injectors and usually pinpoint which injector sounds different. Loosen up that injector line with engine running and see if the knock goes away.

[@mike-of6fu]

@Aspie's garage worthshop Thank you for the reply yes I tried that with no luck so maybe I'll just swap out the all the injectors see if that works

[@madfab7132]

I have an 84 f250 6.9 idi I've been having some issues getting it to start, if I had air introducción how would I fix that? I've bledo the lines before and got it to start but the next day I go to try and start it and nothing

[@worthshop]

Air intrusion van be happening at any fitting or hose from in the fuel tank to selector valve to lift pump to filter head or return lines. It is all about investigating and a process of elimination.

[@madfab7132]

@@worthshop im about to tow this truck you, or fly you out lol

[@donjohnswaggert]

Hey man. Great vid but you didn't show ID the button connection. Does the wire coming off the controller connect to the button ground or to the button power out? I'm confused because guys say that "wire to ground" but what's that for to do with a three pronged button or switch?

[@worthshop]

You have the wrong kind of button or switch. You need a momentary push button switch with 2 prongs. 1 prong goes to ground, the other prong goes to the wire added to the controller. When you push the button it will send ground or negative current through the button and down that wire turning on the controller and glow plugs. Hope this info helps. Good luck with your project, and God bless.

[@davidhowe3076]

I did the same thing with my e350 91 ambulance. Wondering if also adding a grid heater might help?

[@worthshop]

I have honestly never heard of someone putting a grid heater in a idi. They are kinda a cummins thing. Your rig should have a block heater that plugs into 110v ac outlet. Those help with cold starts. Thanks for watching!

[@zachtaylor4872]

Bro !!! I bought the same exact thing from an auction as well 😂😂 my problem is freeze plugs because think someone before me ran it on just water fml

[@worthshop]

The auctions get me to spend $ every time! Hopefully its just freeze plug and your cylinder walls do not have cavitation. Always a risk buying an idi. Thanks for watching. Appreciate the comment and good luck with your bus.

[@zachtaylor4872]

@@worthshop ya man really hoping it’s not cavation, either way think I’m gunna fix it up and flip it

[@worthshop]

@@zachtaylor4872 The resale value of diesel vans and short buses is pretty high right now. Not alot of them left, and all the newer ones are junk from the factory.

[@bryce808mcclure]

I bypassed my controller an it dosnt do anything now what to start light just stays on

[@Santana_1981]

Hello I did exactly what you did Still hard to get it to start I replaced glow plugs Glow plug module , controller Glow plug harness I don't know else to try

[@dylanlee5713]

Any idea on why my truck won’t start after doing this bypass unless I plug my block heater in? Also when I try starting it after holding the button for about 7 - 9 seconds there’s a electricity sound that comes from under the truck when I try cranking it

[@dylanlee5713]

I also put in new Motorcraft GP and new glow plug harness

[@worthshop]

I was going to say probably bad glow plugs but then you just ruled that out... When you push the glow plug button can you hear the solonoid come on and make a buzzing sound while holding the button?

[@dylanlee5713]

@@worthshop yea it’s makes a buzzing noise right when I press the button

[@worthshop]

@@dylanlee5713 The buzzing should continue the whole time you hold the button.

[@dylanlee5713]

@@worthshop no the buzzing doesn’t continue the whole time only buzzes for about a second after holding the button then stops buzzing

[@joeolvera333]

Say Aspie , I appreciate your videos have a 93 , 7.3 idi Ford f"250. I replaced control box , relay , glowplugs. Still clicking I had to put barrel connectors on the wires to the glow plugs . 2 questions glow plug light comes on for about 3 seconds. Does you think I might have a bad box even thou it's new , the glow plug harness should have juice running thru it when in start position ? I am about to the point that I am going to run straight to my glow plugs What do you think ?

[@worthshop]

I would suspect maybe the barrel connectors are not making a good connection. I personally like to put everything I can on buttons and switches to control it myself. But that is just me. Glow plug controller gets power all the time from the big wires from starter solonoid. Small red wire gets power whenever key is on. Glow plugs only get power from the controller for about 8 seconds when the key is first turned on. Your controller could possibly have come messed up even though new. But I would check other stuff first.

[@joeolvera333]

@@worthshop Thankyou so much. I really like your videos. They help me a lot. You are awesome my brother.

[@markstasiak158]

Hey I have SCREWED UP and broke a cheap amazon glow plug while putting in my 7.3idi…I have tried to get the plug out with no success. I wondering if I can bypass the glow plug relay and just power the 7 remaining plugs. The broken plug is threaded in 90% of the way so the head should be sealed. I wish I watched your videos sooner and got FORD plugs…smh. Any help is much appreciated!

[@worthshop]

Best to remove and replace. But yes you "can" just start on 7 glowplugs. The other cylinder will knock a few seconds then fire. Also risk over heating the remaining glow plugs.

[@staric4863]

Nice tip, May I ask you your average mpg with your shorty please? I plan to acquire a f250 with a 7.3 idi. Thanks for the share.

[@worthshop]

I have not driven the bus alot, but have owned several 6.9 and 7.3 idi diesels. Usually get 16-18mpg if I keep the rpms down and don't get in a hurry.

[@dieselwrench3621]

Do you have any idea why a 1991 7.3 idi cranks but won’t start and the glow plug light stays on? Any tips are appreciated

[@worthshop]

I would suspect your glow plug controller is bad, you may also have some bad glow plugs making the controller act funny. I'd probably solve the issue exactly like I did in this video. Then you control when they turn on and off and for how long.

[@dieselwrench3621]

@@worthshop hey thanks for the reply I saw this truck for sale and the guy that’s selling it said it was running great and it sat for around 3 months and he went to start it and it wouldn’t start and the glow light stays on but if I could fix it in his driveway easy I’ll probably buy it ass long ass the plugs weren’t stuck on and swelled up

[@worthshop]

@@dieselwrench3621 That would be my biggest fear. Hopefully they were the good motorcraft ones not cheap knock offs. Should be fine.

[@dieselwrench3621]

@@worthshop I’ll go check it out and try to pull the plugs and if they’re good and if I get it to fire up he just might make some money 👍 great videos keep them coming 🇺🇸

[@heidislz]

Wouldn't it be easier to replace your bad glow plugs? There is a reason why the relay ticks. Its not sending constant voltage to the plugs, hence not frying them, and potentially blowing the lower element up. Which sucks as you surely know. But I get ya on the cold starts especially living in South Dakota. Cant imagine half a can of ether is any better, probably worse. Let me know if you ever did replace the plugs. I wonder if the ones you pull are the crappy autolights.. Not the great motocraft ZD-9s. Just did the injectors on mine (93 IDI NA) and none of them had the 3rd/lower o rings. Guy had the motor rebuilt less than 40k miles ago. Now on to the glow plugs. I expect they are the crappy ones, turning a 1 hour job into a 20 hour one if I cant get them out. :(. Have any tips on that ?

[@worthshop]

As stated in the video, new glow plugs were on order. I was waiting on them to be shipped. Here is the video replacing them. I personally prefer a manual glow plug button on my rigs. I get to cycle them as needed. They do not cycle on a hot engine when I just stopped for fuel etc. kzbin.info/www/bejne/ioirdGuVlph-a80

[@rodneyhoskins8187]

You lost me. Switch to ground connects to what?

[@worthshop]

The terminal on the relay that has the white wire. Remove the white wire and connect grounded switch.

[@samuelsolis6333]

Hey Aspie, I tried doing the same thing but I couldn’t get it to work. The only difference is that instead of connecting to the blue wire, I went straight to power since I wanted the glow plug light to come on still. Not sure if that makes a difference or that could be the problem. I have a 6.9 but I bought the 7.3 glow plug system, changed the glow plugs and the bullet receptacle female connections. If you have the time, could you explain what all the wires you have did? By saying its color and I’ll go back to the video to re-watch and try this again. I always appreciate your feedback and videos! Hope your channel grows!

[@worthshop]

You send negative or ground to the white wire, not positive. White turns on the glow plugs. The blue wire is for the glow plug wait to start light. Negative or ground is also what turns it on, not positive.

[@worthshop]

Check out the glow plug wiring in this video, might help you out as well. kzbin.info/www/bejne/rIPHZnqen71qZ6M

[@samuelsolis6333]

Thank you so much!!

[@BattleChemist]

Looking to probably buy a 7.3 IDI '91 F-450 (actually an "F Super Duty", since they didn't call it a 450, yet)... Just gotta sell my '67 F-100 Camper Special first to make room; can't have the wife upset about too many vehicles on the property, hehe. -Fellow W. WA resident, born-and-raised.

[@worthshop]

Thanks for watching. Appreciate the comment. Good luck with the new truck if you get it.

[@JV_214]

I just bought a 94 IDI and have the clicking after about 5 seconds, does that mean glow plugs are bad?

[@worthshop]

7-10 seconds is how long they usually stay on if working properly, the clicking on and off when first started is normal too. When I buy an idi I usually just replace glow plugs with motorcraft zd-9 so I know they are new and functioning properly unless I buy it from someone who tells me they were just replaced. I also usually replace the cdr valve as my initial tune up so I know it is good. Thanks for watching and appreciate the comment.

[@Austinsairplanes]

I did this to mine and it worked... Until I lent it to my Mom, she held the button too long and fried the rest of the glow plugs. I spent the money and replaced the glow plugs and controller, now I can lend it to a family member and not have to worry about them frying the glow plugs.

[@worthshop]

Ya, when you put a manual button you have to give instructions when you loan it out. I've learned that lesson the hard way, even with people who you think know what they are doing. Better safe than sorry

[@Austinsairplanes]

@@worthshop I shortened the story to keep it short, I did tell her to only give it 10 seconds, she gave it more than 30 seconds.

[@MaxMiniTV]

That's the same bus I have!

[@worthshop]

I hope it treats you well! Safe travels and God bless. Ever have questions or need advice about it just send me a message. I will try and help you out if I can.

[@AnkaraKecisi]

Watched how you did, I did the same thing on my 7.3 idi, glow plugs are working now manually same way as you did. Thank you for that. When I drive down hill especially when the engine is cold it's blowing out blue smoke and made some research It's Cdr valve, and some people delete cdr valve, Do you think deleting it or replacing with a new one is good? Greeting from Calgary.

[@worthshop]

You can rinse out the cdr valve with diesel fuel, clean out all the oil and make sure it is working. Or replace it, they cost around $80 I wouldn't delete it. You will end up with smoke and oil coming out the "road draft tube" you make. It is just messy. Thanks fir watching and God bless.

[@C.J.Traylor]

I owe you a beer if your every. Cle Elum

[@worthshop]

Thanks ! Glad my video was helpful.

[@curtisskowaisa972]

Hey Deer Hunter !!! I don’t play the banjo !!! Was looking for a simple video on glow plug bypass !!! How is the rest of that crap really mattter ??? Lucky though !!! I came prepared with washable crayons ;)

[@worthshop]

You must have the munchies huhh Crayola eater?

[@o61000]

I uploaded a video on my 7.3 IDI I made a few modifications I don't know how to send it directly I'm not one of those technologically-advanced kind of people lol

[@worthshop]

I checked on your chanel but didn't see any idi videos. I did look though! Appreciate you watching my chanel, and enjoying the idi content.

[@simpleman4224]

👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

[@worthshop]

Hope the video was helpful. Good luck with your project. Hope you have a great Christmas.

[@mikecorleone6797]

Dude just rip out the glow plug relay system and use a spare starter solenoid.. that’s what i did to my 90 f250 and my truck kicks before it does a full revolution every time. I put a 30 amp push button on the dash and only need to hit the button for literally 4 or 5 seconds at most

[@worthshop]

I have a 86 ford with 6.9 wired up with a starter solenoid rather than glowplug controller. Works great. But most people would rather use what they have already than spend $ on more parts. So thought this video would help more people.

[@mikecorleone6797]

@@worthshop yea i got that. I just like simplicity

[@terrygriffith7907]

some of your glow plugs are bad thats why it clicks

[@worthshop]

All replaced yesterday. Just bought it and was waiting on them to come in the mail.

[@wildrosegarage4208]

@@worthshop Always use motorcraft glowplugs. The others are pure junk and burnout in the first few starts and swell so they don't come out (Autolite).

[@worthshop]

@@wildrosegarage4208motorcraft zd-9 is all I will ever install in a idi

[@James_the_Builder]

When they click right away three or more are bad. After 30 seconds they are supposed to click

[@DOSputin]

This is really bad advice. The reason that your glow plug relay is turning off quickly is because one or more of your glow plugs have failed. Service your glow plugs. With a simple and cheap multimeter you can test each glow plug for appropriate resistance to determine if it is still good or if it has failed. For the International Harvester 7.3 indirect injection diesel engine, a functioning glow plug typically shows a resistance of around 0.6 to 2 ohms when measured from the terminal to ground. If the resistance is significantly higher or if there's no continuity, it suggests that the glow plug may be faulty and needs replacement. It's important to use a multimeter for accurate measurement and to ensure the engine is off and cool during the testing.

[@worthshop]

Hey tell me you didn't watch the video without telling me you didn't watch it!