8.1 Vortec Compression Test & Spark plug Change W24 Workhorse Chassis

Per factory repair manual this is how to perform a proper compression test and spark plug replacement.
Plugs I used ACDelco 41-101 Professional Iridium Spark Plug amzn.to/3JkfVpK
Best Spark Plug wires for our 8.1 Vortec
www.ultrarvproducts.com/SPW81...
Update about spark plug gap
We’ve done a lot of dyno testing and with our "Magnum wires", there was absolutely no difference in power between .045 gapped plugs and factory .060 gapped plugs. Removing the resistance in the ignition wire has many benefits! Back when we use to run Taylor wires, the .045 gap worked well but with the Iridium tips being a bit more fragile I recommend leaving them alone at .060.
__________________
Jon Brazel
Ultra RV Products / Brazel's RV Performance

[@Blogengezer]

Thank you for vid Kevin. Swapped out original platinum plugs. 106,000 miles.. 1/4" gaps. Original wires on 2004 were seized, destroyed several during removal. Made a long hook tool and pulled connectors from outside wheel wells. Same hook tool then reinserted and pulled off the seized metal tip connectors. No more misfires on idle.

[@ktoutdoor]

Wow 106,000 you got your moneys worth out of those plugs for sure.. Now you wont have to do it till 200,000 miles. But Brazels RV recommends changing every 30,000 and I agree based on what mine looked like at 40,000. Thanks for watching and leaving a comment.

[@damonscott9677]

Another great video! Looking forward to the next one.

[@ktoutdoor]

New one coming out on error code P0200 ... Thanks for watching

[@thadmelson-jr6042]

great video kevin i have a 07 itasca with the same engine and i'm getting ready to change the coils, plugs and plug wires...with your video i feel more comfortable

[@ktoutdoor]

Thanks for watching if i can be of any help just text or call 606-875-0125

[@robertosegura1359]

P0200 means that the engine control module (ECM) has detected a malfunction in the fuel injector circuit. The fuel injector circuit controls the fuel injectors and commands how much fuel and when to spray the fuel.

[@ktoutdoor]

Thanks for contributing

[@edwtg59]

Kevin, thanks for these videos on the Workhorse chassis and 8.1L Vortec. I have a 2007 Winnebago Adventurer...same chassis/engine...while I don't have a lot of time to work on it right now, I'm looking forward to having some time soon and your videos will be invaluable! My current challenge is finding the reservoir for the hydraulic jack/slide-out system...I know I'm low on fluid but having a hard time locating the reservoir...probably need to call Winnebago! Terry

[@ktoutdoor]

Thanks for watching this link may help you locate your tank I think its in the same location as mine kzbin.info/www/bejne/j4ndfWWEjdeEkLc If you ever need help just call or text me 606-875-0125 Kevin

[@lauraswan125]

P0200 is an fuel injector malfunction, check all your injectors for o-rings hardened, wiring etc......

[@txharleydude2612]

Dielectric Grease is not an insulator. DG (Electrical Contact Lubricant) provides ease of assembly for electrical connections, protects from moisture and prevents oxidation & corrosion. Whether you should use it on high voltage connections and/or in high heat environments is another matter for discussion.

[@simonbarron6211]

Hi Kevin , I have a 2004 Itasca with the 8.1 here in Portugal. Much appreciate your films. The one thing I am missing is a engine workshop manual and can’t find where to source one...any advice would be great. Also any thoughts on whether after 6 months sitting I should drain the fuel tank ? Thanks for your time .

[@ktoutdoor]

6 month on the gas should not be a problem at all, you can always mix some fresh gas with it when your ready. Send me a email to [e-mail] and I will send you a link to all the repair manuals I have.

[@johnnybolen5701]

How in the world did you get underneath to change those plugs. I have a 2001 and I don't see any way of me being able to get to them underneath. Did you jack up the RV. Thanks

[@ktoutdoor]

We have a W24 with 22.5" tires so I got lots of room underneath

[@larryv4249]

Kevin, you mention that you have an "enrichment problem" in this video. Did you ever figure out what was the cause of it? I am wondering if it was the PCM that you replaced with an older PCM that you had when you chased a P0200 code. Also is the PCM and the ECM different components on your MH?

[@ktoutdoor]

The enrichment problem seams to only happen while I'm out west on after big change in altitude climbing a hill in open loop but it never closes until I shut down and restart the engine. The P0200 was caused by a faulty injector driver in the ECU do to moisture infiltration. ECU or ECM = Engine computer TCM or TCU = our Allison Transmission computer.

[@larryv4249]

@@ktoutdoor (just 1 more question) after you disconnected the harnesses to the coil packs and to the injectors, did you bleed down the 55 psi that was in the fuel rail? I am wondering if that pressure remained at 55 while you were cranking the engine but the fuel could not get past the injectors because the harness was disconnected?

[@ktoutdoor]

@@larryv4249 I assume I removed the fuel pump relay so what little pressure was left would quickly bleed off on the first crank. Because the injectors would still be pulsing.

[@falafelandthings.4332]

Hello Kevin, I have 2005 workhorse p42 6L v8. Iam searching the right fuel filter & bank 2 sensor 2 oxygen sensor but the results are a bit confusing. I wonder if have an idea of the parts that matches my truck. thank you for your time. Amir

[@ktoutdoor]

Text 360-736-2158 this is brazels RV they should have the part you need

[@danielcharles6804]

Im sorry i have a question???? What year they start doing the 8.1 with coils version??? Because i have seeing some rvs with the 8.1 with distributor inginion???

[@ktoutdoor]

Around 2001 is when the 8.1 started no distributor.. but its predecessor the 454 had a distributor.

[@mruofacat]

How does the double stack of Scan Gauges work? Do you have a splitter on the OBDII wire?

[@ktoutdoor]

Yes this is what I use Docooler 16Pin OBD2 Splitter Extension Cable Male to Dual Female Y Cable 30cm www.amazon.com/gp/product/B000TMCX72/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

[@ktoutdoor]

I love having 8 data points to look at while driving

[@thadmelson-jr6042]

Was there any trick to getting the plug wires off the plugs?

[@ktoutdoor]

Google spark plug pliers that may help but it might be wise to get a new set of plug wires if any of the ends pull off this is what i bought www.ultrarvproducts.com/SPW8100-UltraPower-8.1L-Magnum-Spark-Plug-Wires

[@joesmith-fi1sx]

Hi Kevin. what are your thoughts in these plugs and how they worked for you ? iv got a 02 chevy avalanche 8.1 with 190k miles. runs great and strong but iv got a feeling the plugs are old. looking to change them and want to use the best plugs.

[@ktoutdoor]

Yes this is still the recommended plug gap at .060 I used ACDelco 41-101 Professional Iridium Spark Plug amzn.to/3CQnphs make sure they are ac delco and not counterfeit

[@joesmith-fi1sx]

@@ktoutdoor Did that other gap work well or are you saying 60 was better

[@ktoutdoor]

@@joesmith-fi1sx FROM MY SUPPLIER IF YOUR RUNNING NEW SOLID CORE WIRES? SEE THIS VIDEO kzbin.info/www/bejne/sH6tkndql56oq9E Update about spark plug gap We’ve done a lot of dyno testing and with our "Magnum wires", there was absolutely no difference in power between .045 gapped plugs and factory .060 gapped plugs. Removing the resistance in the ignition wire has many benefits! Back when we use to run Taylor wires, the .045 gap worked well but with the Iridium tips being a bit more fragile I recommend leaving them alone at .060.

[@joesmith-fi1sx]

@@ktoutdoor thankyou sir!

[@lauraswan125]

I have an 8.1L on my suburban, the recommended gap in my manual is .60 your gapping yours at .45 what's the correct gap?....thanks

[@ktoutdoor]

Sorry for delay , I was told by Brazels RV per there dyno to gap at .045 for better performance + the gap will slowly get larger

[@daewoo818]

You can gap iridium at 45 but double platinums are supposed to be at 60

[@joesmith-fi1sx]

Did you get better performance out of your engine and did it run better by gapping to 45 instead of 60

[@samjackson8898]

Where did you get the repair manual

[@ktoutdoor]

Text me you email address and I will send it to you. My cell number is 606-875-0125 Kevin

[@albundy8052]

Remove the fuse to the fuel pump. NEXT start the engine, engine will run for a short duration. This will bleed off all the fuel pressure.

[@ktoutdoor]

Thanks for the tip,

[@daewoo818]

P0200 is an injector circuit code. Most likely electrical, not mechanical. The 8.1 is notorious for intake gaskets if you do run across a misfire.

[@ktoutdoor]

Thanks for contributing for me I found moisture had got inside the ECM and was shorting out one of the injector drivers, The ECM had been modified and not sealed properly. kzbin.info/www/bejne/fHzVnZ9qi8mcadE

[@nahimibrahim107]

You need a better microphone. Can hardly understand anything you say.

[@ktoutdoor]

Sorry it was my voice at the time after a bad cold it took 3 months for it to come back.