Chevy 3.1 engine problem. Fuel pressure regulator

[@Jason-pr6lk]

10 years old and still one of the best explanations on here. Thank you.

[@elioselectric468]

For the fuel pressure regulator there is a clip with one bolt holding the feed/return lines on the rear or left cylinder head. Loosen the bolt and the lines will have enough slack to pull up the regulator to get a wrench on it. No need to remove the throttle body. You can relieve pressure on the rail where the test port is, just push in the Schrader valve with a pocket screwdriver. Make sure to wrap the port with a paper towel, usually not a lot of pressure. Don't forget to replace the o rings, apply fuel or clean engine oil for installation. The fuel pump actually feeds the rail first and the regulator controls the fuel pressure returning to the tank/pump. This is a common fix for these 3.1/3.4 engines.

[@donwilson4618]

Excellent video. Not a slick polished pro video which is refreshing. Honest and covered one heckuva lot of information. Very well done.

[@makeupaname8176]

Thank you so much for this video this is exactly what is happening to my Chevy Corsica and this will give me a place to start in order to solve my problems. Again thank you.

[@RealEpicOneLB]

Man your explanation is amazing thanks man. I D.E.M. and was feeling lost now I can change and fix this with ease

[@stefanlopez5823]

Wished i saw this earlier....Car died and changed the ignition module...by strong advisement...My common sense brain said to look at the fuel pump or sonething related to it .. SURE thing ,it turned out to ve the Fuel Pressure Regulator . I took off the vacuum hose to the Regulator and the Engine ran horribly...wanted to die out and eventually did. ... He rhanks for this ... This is giving me peace of mind . BTW .... you have a great speaking voice ,good vocabulary for a guy your age ...peace

[@gtamayo1]

Ty you saved me about an hour of looking around and a headache

[@conspiracycomedy4814]

Thanks a lot. Gives me a lot to think about. I'm gonna go pull that vacuum line now, wish me luck!

[@loganknown6517]

It’s 61.99 for the O2 sensor. With the employee discount it drops it down to about 53 and some change

[@joshuastout468]

Smell of Rotten Eggs is not fuel pressure regulator.... it's related... the dumping of fuel... unburned, half-burned, all that good stuff has destroyed the catalytic converter. DONT FORGET TO LET EVERYONE KNOW TO CHANGE THE OIL AFTERWARDS DUE TO UNBURNED FUEL PASSING THE RINGS.... WHICH CONTAMINATES THE OIL... Good Luck... if maintained properly these engine were designed for 400,000 miles!!!

[@stix562]

Glad you pointed that out to him about the CAT. and the oil .. Does maintaining include changing the upper and lower intake manifold gaskets every 100K or less or so - along with a new water pump every 100 K or so, harmonic balancer's, and the SEALS ,this thing dripped oil from 12K miles or less . I know cars need maintenance - but what kinds .. and what it takes to do these jobs and how often. I am not impressed with this engine . Maybe for a GM it qualifies as good .

[@stevenphalin4957]

Any ideas why one would backfire through the air cleaner ?

[@pandybear24]

thanks, im about to check my FPR. i hope this is the problem after spending $400 on a new fuel pump and fuel filter and having the same problems.

[@lbdonp]

Thanks for the informative video. Also, right around the 12:45 where you showed the vacuum hose to the regulator that you pulled off to check, right next to it there is a L shaped rubber connector that connects to that small white hose, do you know what that is for? Mine has broken off and is running with nothing connected to it. Thanks

[@bmaiceman]

Sorry I dont know off topof my head. but will try to look into it a post. thanks wor viewing

[@justinshearon4828]

that L shaped connector is to the hvac vent controls.

[@andrewgoode3434]

I thank that is a PVC valve. I almost completely took my engine apart replacing a blown head gasket. That took awhile.

[@bobmimmj6736]

Don P me all am

[@newfieledman9164]

that white small hose is for your heater vents inside the car i broke mine and noticed that my heater air control vents would not change i then repaired it with heat shrink tubing now it works great.

[@stevooliver3877]

That regulator sometimes gets stuck closed or open ..which makes pressure too high or low ..diaphragm may be busted cause gas getting in the line dumping raw gas into the intake causing misfire on 1,3 or 5 cylinders since the vacuum port is on bank one..but this problem will have warning signs when it is going out like runs rough & hard starts but in early stages it clears up after hits operating temperature..narrow down problems by simple fix to major fixes..like first you can in the car in the morning turn all fans,radio off & turn the key to hear fuel pump to see if it runs then shuts off before start..if it don't stop means pressure is leaking or valve is stuck open causing low fuel pressure

[@alfonsocorona1008]

Very helpful! Thanks a million for making this video.

[@beemerlife7130]

Big very big help about my Acura integra thanks bro I know have n idea thanks thanks 👌👌👌✌️✌️✌️

[@samuellewis1334]

I just had the same job done on a Buick Century with the GM 3100 in it. The engine was having troubles running at idle, and when it could: it struggled. Starting required extra cranking, and driving required putting the vehicle in N at stops withe some feathered revving. My mechanic told me that I was running the risk of a car fire as the fuel coming from the ruptured fuel regulator was spewing fuel onto hot exhaust AND because the injectors were pounding fuel into my cylinders, it's very possible that gas got into the soot of the catalytic converter as well as gas in my oil. An oil change and new part later, he told me he tried getting spewed fuel off the engine/exhaust as best as possible. He also recommended driving HARD on accelerations to burn out anything that might be in the catalytic converter. My question with this job: How much driving do I have to do before my car is no longer a fire hazard? I do live in a very frozen northern part of the U.S. (we seem temps below zero this time of year almost everyday)

[@bmaiceman]

thanks for commenting. sorry for delay. been havingtrouble getting comments,. Take it out and drive for a few houres. a good hundred milles. Drive hard on enclines up hills. but dont speed just get er good and hot in the converter. should be good after that.

[@bmaiceman]

Dont remember what tools are needed right now. sorry

[@Keepnthem]

You can cover the FPR at the beginning of the video and save the engine overhaul for those who need it.

[@johnlira3316]

Which one caused the vehicle to smoke out the back egr or fuel presure valve??

[@bmaiceman]

Been a while since I did that video. But as I remember. Fuel regulator was bad letting gas into vacuum system causing rich mix. Causing black smoke.

[@crystolslimbracey]

Thanks for the video

[@danspaghettiman]

I see that you have low windshield fluid as your car dinged and I see the light. I drive a 2000 Malibu as well. I did fill it up with a gallon of windshield fluid and got rid of the light for two days, but no leaks. Did you ever find a way to get rid of the light?

[@DavidLorellHoskins]

Thanks PRW, this helps a lot.

[@searching4answers79]

Thank You!

[@Wisconsin.pikachu]

would this be the problem maybe in my 90 3.1l mpfi? during the winter and winter only when its about -20 or colder my car does not want to start unless i have my foot on the gas to kick up the rpm but once the motor is warm it runs fine

[@toyoscio]

Time to sell

[@Wisconsin.pikachu]

i am actually in the process of ripping the car apart (cast aluminium and such) for scrap got a new 05 yukon, i blew both head gaskets and lower intake manifold gasket the same day :(

[@c.geezer8753]

Thank you, P.

[@midnighttrainbullieskennel]

My lumina just start smell like eggs and the one hose is full of air the car is off

[@SportingSporting-jv8qk]

I have oldsmobile cutlass cruiser s 3.1 have a lot new parts working very good one problem when on park everything ok when a shirt to the drive and I stop on stop light break down locked like he wants to run shaking no to much but shaking I don't know what a problem you can help tank you

[@angelp6128]

Sporting143 Sporting143. could be motor mounts

[@gobloit4473]

could have too much cleaner in fuel or a bad pattern on an injector.... have u had any work done previously on the engine before this issue?

[@craigsky3927]

thanks so much for your information. . 96 cutlass supreme 3.1. every thing but the rotten egg smell but I think that's because it's no good n the muffler just fell off after hitting a crazy pot hole.

[@charlesb5318]

very good information thank you

[@adamdefibaugh9674]

If you tile the engine forward, you can access the bank 1 O2 more easily.

[@neonnight34609]

You don't have to remove anything, you can get it out without removing the air box or the throttle body. 10 min job tops. lube the o-rings

[@29pruitt]

What Are You Going To Do Talk About Other Codes That May Exist Or Change Fuel Regulator?

[@bobbyjohnson6771]

will look at this thank you so much

[@delimac59]

My 02 Malibu starts fairly easily and idles fine for about 15 seconds or so, then acts like it is going to die idle drops really low and chugs. Will finally catch itself and then the idle goes way up. Also loses power occasionally through parking lots going slow.

[@kevincarbins4524]

I just bought a 97 malibu for $500 with 68000 and some change on it i changed the fuel pump in the gas tank the whole housing car started ran good drove it home..maybe a week down the line i go to drive it and it has no acceleration power whats the problem is it minor or major

[@bmaiceman]

It would be extremely difficult to make that kind of determination without more information exclamation are there any check engine lights on?? How long has the car been sitting before you bought it?? What's the condition of the fuel in the fuel tank?? Did you change the fuel filter when you replace the fuel pump?? Aside from losing power how does the engine run?? Does that idle well does it lope does it stutter or try to die? When you say it loses power does that mean that it will run fine when you're cruising along but when you really step on it there's no guts??

[@kevincarbins4524]

Idles dope asf... Just from a regular takeoff i have no acceleration power and when i try to stomp down it really loses power

[@bmaiceman]

Kevin Carbins well that seems like a very cheap price for a car with so little miles on it! Assuming the miles are accurate. So if it was me the first thing I think I would do is change the fuel filter and see what that looks like. A plug fuel filter can Rob power from an engine in a hurry. Next thing I do is check the plugs see what they look like how are they running spark plugs can tell you a lot about the way your engine is operating. How did the engine run before you replace the pump?? Did you purchase the car has a non running vehicle knowing that the fuel pump was bad and then replace it to get it back on the road??

[@bmaiceman]

Kevin Carbins hmmmm ok. Well like I said I think my original advice with stand at this point. Check the fuel filter replace it! Check the plugs see what they look like. Since you were pulling the plugs anyway I think I would perform a compression test on the engine to see what the compression is. There is one other possibility that I can think of off the top of my head as long as the engine is not running too rich from a fuel regulator problem. it is possible that the catalytic converter for whatever reason is plugged up and is starving the engine for power. Although with the car having as little miles as you say it has I find that to be less likely. So start by checking the fuel filter replacing it, checking the spark plugs doing a compression check. I'm assuming this car is equipped with the V6 engine??

[@kevincarbins4524]

I bought from a person my mom has known for 20yrs so i believe it does have low mileage and yeah its a 3.1 v6... How do i do a compression test?

[@lilkillBeats]

My Chevy Malibu doing similar things but my fuel pressure regulator is good but still car dies after stepping on gas but idle smooth and fine Can Anyone help me out I'm about sick of this car

[@jonathonhicks2369]

Did you ever find out

[@lilkillBeats]

@@jonathonhicks2369 yep the coil pack wire was not good

[@brendanshanley406]

Don't use anything to probe the intake egr ports they have little screens in them. but if they are clogged punch them out the 3.1 is strong it can take it.

[@pedrodaniel9929]

Very helpful!! Thanks for sharing!..

[@fernesal]

My 3.1 started misfiring cil. Num.2. changed sparkplug, cable and coil. It came back the same. Then I cleaned throttle body and idle valve. Tried again. Now I got multiple misfiring. I'm pulling my hair

[@jonathonhicks2369]

Did you ever find out

[@fernesal]

@@jonathonhicks2369 No time, no worth it. Fixing cars for a hobby is only for either retired people or young with time and some money trying to get entertained. I made my math and said: My back hurts, my pocket too. I got things to take care of and bills to pay. It was fun but it's over. Junk it

[@jonathonhicks2369]

@@fernesal I solely wish I ain’t here that experience I have a 3.1 cutlass supreme 1994 with all the issues I were referring too

[@fernesal]

@@jonathonhicks2369 Fix every issue as it comes. Don't let them pile up so later becomes a nightmare.

[@SportingSporting-jv8qk]

no engine light on everything working on car

[@kevincarbins4524]

Hey brotha looking for some info need some general help

[@bmaiceman]

Kevin Carbins what ya need

[@bmaiceman]

Kevin Carbins ya a vacuum leak can cause a fail. Can also cause engine light to come on. If you know where vacume leak is and fix it. Then clear the codes. It should be good

[@bmaiceman]

Kevin Carbins sounds good. Good luck there

[@kevincarbins4524]

Hey you got a cell number i can reach you at

[@kevincarbins4524]

Hey brotha car has been running great but just a week ago my fans just stopped u have any general ideas of what it can be

[@randalllock5482]

whats with the arse hole in the backround with the motor running? Other then that, great video!

[@WheelockLawnCare]

yeah i know the 3.1 had head gasket problems alot of them did

[@bennygreene7429]

Wheelock Lawn Care If a head gasket is blown, is the oil dipstick one of the first things you want to look at, to see if the oil looks watery or white-looking?

[@Bikewithlove]

Nonsense. The nut under the regulator can easily be unscrewed without removing anything else. It only needs to be loosened, then it spins right off.

[@stix562]

Noticed the Odometer gauge blinking.. Voltage regulator / Alternator ...

[@SportingSporting-jv8qk]

one more thing oldsmobile cutlass cruiser s 3.1 1994

[@tonyhuynh1968]

Get to god damnit point