1988 C4 Corvette - Fuel Pressure regulator Replacement

This will show the Fuel Pressure Regulator replacement process for a 1988 C4 Chevrolet Corvette. Tips and tricks for completing this task.

[@hawgsfrog4166]

Changed mine out today, 1-26-2021, thank you so much. it was the problem and your video gave me the confidence to "get Er Done"

[@johnbryan911a]

Thank you for making this video its very helpful and gives me a lot more confidence pulling the intake.

[@DrivingTheClassics]

I'm glad that was able to help.

[@theodorezachary7267]

Hgg

[@Soupy59]

Manifold to Runner Bolts 25 lb. ft. Runner to Manifold Bolts 25 lb. ft. Fuel Rail Attaching Bolts 15 lb. ft. Throttle Body Attaching Bolts 18 lb. ft. Throttle Position Sensor 18 lb. in. Idle Air Control Valve 13 lb. ft. Throttle Body Coolant Plate 27 lb. in. Throttle Body Cover Plate 30 lb. in. Power Brake Vacuum Fitting 108 lb. in. Fuel Line Nuts 20 lb. ft. Fuel Tube Bracket Bolt 25 lb. ft. Fuel Pressure Connection 115 lb. in. Pressure Regulator Base to Rail 44 lb. in. Pressure Regulator Bracket 44 lb. in. Outlet Tube to R/H Rail Retainer 44 lb. in.

[@maclogan6872]

I like that you did a recap on the outcome of the repair

[@DrivingTheClassics]

Thank you. I will try to do that each time. Sometimes the repair will not work, but I will report it either way.

[@Hannibhaal777]

Thanks for the video ,will help me alot i couldn't figure out what was wrong with my 85 ,it has the same symptoms . Thanks

[@ericcagle8780]

Thank you for the video just what I needed!

[@mopar507]

Great work! Thanks a million!

[@lonewolf2608]

You always disconnect the negative cable, not the positive. You did alot of unnecessary work to relieve fuel pressure. The Schrader valve and gas cap would be sufficient.

[@JL-gx6by]

Thankfully . Very good video.

[@veedub6624]

very well done video!

[@genemauguin8611]

Whole you are in there clean EGR. Save your self future work . Torque reg. cover to 15 in lb. Very important so as not to damage diaphram. Love these guys with so called shot cuts!!!

[@THEFlea1991]

He’s got the video, you don’t. Loser

[@trentharvey7508]

Nice job.

[@johnnysizemore9399]

Very helpful

[@mikefish4450]

I’m doing that today. But you should’ve got new gaskets for the intake runners. I hate using used gaskets👍

[@ericcagle8780]

Thank you for the video

[@JoseRodriguez-uu5us]

U know u don't have to mess with the fuel pump at all. All u have to do is depress the valve on the fuel rail and that will remove all fuel in the rail. It's just like letting air out of ur tire..

[@vettepurist304]

It’s 15 in/lbs for those security torx screws on that regulator. If you over torque them it will tear the diaphragm and leak! You’ll have to do it all over again.

[@ericcagle8780]

Thank you brother!

[@CrusaderX]

Well done !

[@backyardbuck6362]

I found out one of those bolts heads was cut off with not enough sticking out of the hole to get pliers on thanks to the previous owner.

[@user-hc3dr6mx2c]

Haha :)

[@MRJ520]

You could have added two quarters under the regulator to increase the factory fuel pressure a little bit.

[@tomanderson8127]

That wouldn't have corrected the hole in the rubber diaphragm leaking fuel into the vacuum line and intake.

[@rexburch4146]

maybe I should get rid of my 89 IROC for a corvette , WAY MORE ROOM TO WORKN ON !!!!!!

[@DrivingTheClassics]

It made it so much easier to work on.

[@Nzchimeran]

Nice info thank you. Would it be worth to ultrasonic bath the plenum once removed to clean it or just carb cleaner? Does your ring get caught on lines all the time? Mine does 🤣

[@OcelotTheFurious]

Can't complain enough about how dirty amd cluttered the L98 looks with all the emissions garbage in them. I removed all that and it's a lot easier to work on mine but hey idk about you but I live in a state where there's no smog inspections. Just complaining about the corvette l98 in general. Lol. Anyway, good tutorial on how to tackle that job. Good day!

[@MRJ520]

You shoulda put a quarter in there before reassembly

[@bryancruz9086]

hey whats that black cap that you put on at 25:04?

[@OMACMedicFiveZero]

I have a 400 small block in my 91 land cruiser. The fuel pressure regulator is much easier to get to in the vette 😂

[@justindellimagine9795]

Does everything work on your car like it should on your car, i would love to know if you have facebook if we could share some pictures of where some things are... previous owner really messed up alot of stuff, and i need to figure out where it all goes and looking at your engine bay it looks really neat and organized!

[@DrivingTheClassics]

Hi Justin, Well, everything did work how it should until tonight. We jumped the timing chain. So, it's going to the shop tomorrow. What year do you have? Thank you for the complement on the engine bay. They are typically very simple. Here is my Facebook page. facebook.com/DrivingtheClassics You can share pictures on there if you like. Thank you, David

[@eddielujambio6064]

What were the symptoms and how did you calculate it was the fuel pressure regulator

[@eddielujambio6064]

My corvette was stored for 11 years. The fuel pump was bad and replaced. Now that I have it back together. The motor just barley runs@4500 rpm. When I try to push on the Excelerator it dies. I purchased this 85 from a neighbor who told me it ran great the day it was stored. What else could it be if it wasn’t the fuel pressure regulator?

[@justindellimagine9795]

@@DrivingTheClassics how did youtube JUST notify me of the response. That is crazy. ANYWAYS a lot of things happened since a year lol, i had an 88 auto whenever i messaged you but now i have a 92 manual and it runs really good but i still got the 88, its not running at the moment ill hit up your facebook still thank you for the reply!

[@smutty542]

Great video but not a torque wrench in sight.

[@joestewart5121]

I have a 85 and what mine does it's like it has no fuel pressure at all so I have to crank and crank it till it finally gets fuel. Would that also be the regulator?

[@DrivingTheClassics]

It could be a number of issues. Fuel pump, fuel filter, clogged injectors. Which was all happening with ours. This was the last item that we replaced. Unfortunately, there's a lot that could go wrong. You just have to eliminate each issue. Good luck.

[@jesusa.ramirez2106]

The screws have a tiny dot in the middle that won’t allow the L wrench to get in place to unscrew it ….

[@DrivingTheClassics]

Those are security torx bits. Harbor freight has sets for $5.99.

[@jesusa.ramirez2106]

@@DrivingTheClassics thank you Sir …

[@JohnJacobJr1]

What part of Texas you in ? I have the same year Vette just cant get it started

[@DrivingTheClassics]

I'm near San Antonio. That could be a number of issues.

[@DrivingTheClassics]

@UCegiW1RssrmWTpAOKUgyu1Q facebook.com/FindingtheClassics

[@JohnJacobJr1]

@@DrivingTheClassics I'm actually in San Antonio! By chance are you familiar with the car and why it might not run?

[@DrivingTheClassics]

@@JohnJacobJr1 First, does it turn over? if so, battery and starter or good. There are 3 main components that would contribute to it not starting if the first are good. No fuel, No spark or no air. Most of the time it's the first two. I would first check if you have fuel pressure. If not, start with the fuel pump and work up to the injectors. If that's good then check if you are getting spark. You can pull plug from the #1 cylinder and position it close to the block and crank it. If you see it arc then you have spark. from there it will depend on what you find. the C4's are a little mysterious sometimes. Ours left us scratching our heads a lot of times but we would eventually find out what it was.

[@JohnJacobJr1]

@@DrivingTheClassics just got your Facebook I'll message you there I'm sure it's a bit easier thanks!

[@spenceair1972]

I feel cheated. Why no first start?

[@DrivingTheClassics]

The last part of the video was corrupted. That's why I ended it the way I did.

[@spenceair1972]

@@DrivingTheClassics that sucks. Kinda like losing a baby picture.