The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

  • Update Your Password Today!

    We have implemented tools to identify member accounts using insecure passwords and will be locking those accounts until their passwords are updated. Don't get locked out of your account - update your password today, and ensure your account has a valid email address on file. Read more here...
Please Support STM Tuned
Please Support Fuel Injector Clinic

#1 cylinder not working

Join us at the 2023 Shootout!

BLOHS7844

Proven Member
300
0
Oct 25, 2011
Appleton, Wisconsin
I just replaced the head gasket and went to start it up and it sounds very rough. Thats expected with the lifters being bled but it won't stay running with throttle. My egt isn't even registering a temperature (its in the runner for cylinder 1) and my wideband isn't registering either (I assume because its too lean). Whats the standard procedure for diagnosing this?

On a side note my oil pressure gauge isn't registering a pressure. It goes from 0-100 on start up like it should but it drops down to 0 when running. Is it just hooked up wrong?
 

BLOHS7844

Proven Member
300
0
Oct 25, 2011
Appleton, Wisconsin
Cylinder was running just fine before this so I doubt that its the compression. maybe a lack of fuel? the fuel light is one right now because its so low on gas.

It also now only runs for 5 seconds then shuts off. its very consistent in the way it runs then shuts off. i'm thinking its just running out of gas
 

Sebba

Banned Member
782
5
May 11, 2006
Austin, Texas
Number one make sure you actually have oil pressure, address that first.

Second, you need to check for the presence of spark and fuel, and take it from there.
 

WES_393

DSM Wiseman
3,816
74
Jun 6, 2011
Colo Spgs, Colorado
Check to make sure all your fuel injector wires are clean and fully connected. I would also seriously look into a compression test.
 

rlacasse1

Proven Member
2,666
9
Jan 6, 2009
Scott AFB, Illinois
Fix your oil pressure problem first.

How do you know that it's the #1 cylinder? My bet is you have your timing off and it's causing the car to run rough. I only say that because you just did your timing. It'd be odd for an issue to pop up like that from you putting on a headgasket unless you did something to cause it. Like forgot to plug something in. But still, I would double check your timing.
 

BLOHS7844

Proven Member
300
0
Oct 25, 2011
Appleton, Wisconsin
The runner for cylinder 1 wasn't even warm. And there were metal shavings in by the exhaust valves from a machinist redrilling a stud. I didn't notice till the head was already on and I got as much out as I could and I'm hoping the rest will come out while idling. Theres no way it would cause low compression already.

Many of my injector wires were exposed and almost touching so I put electrical tape around them. I don't think they are the issue though. I smelled gas on that cylinders spark plug.

Also how would I just timing without removing all the pulleys and the lower timing cover?

And for some reason im missing a tranny bolt and thats making my starter grind horribly. somewhat unrelated though
 

rlacasse1

Proven Member
2,666
9
Jan 6, 2009
Scott AFB, Illinois
Well, I would go ahead and check the compression now that you mention the shavings.

However, still double check your timing. You will have to pull the covers to do it correctly and be 100% about it.
 
Last edited by a moderator:

BLOHS7844

Proven Member
300
0
Oct 25, 2011
Appleton, Wisconsin
My MBC wasn't even hooked up LOL bit of a vacuum leak? LOL

Anyway my last starter was grinding horribly and I found the bolts were loose. I took it out and wrecked it while it was out of the car (don't ask) and got another one. It was doing ok for maybe a total of 10-12 seconds of cranking (not all at once) but now its grinding again. Starter bolts aren't loose this time. I did notice I was missing a tranny bolt so could that cause that? I have no idea why the bolt is gone and the starter bolts were loose
 

jayson427

Proven Member
1,515
3
Dec 20, 2011
Mesa, Arizona
You need to go over all of the work you did since it seems its incomplete. It doesn't take much to mess the timing up so make sure its right. Do a compression check and I would stop cranking your motor till you verify your timing and compression are good.
 

AllWheelRS

Proven Member
134
2
Oct 17, 2009
Orange County, New_York
The runner for cylinder 1 wasn't even warm. And there were metal shavings in by the exhaust valves from a machinist redrilling a stud. I didn't notice till the head was already on and I got as much out as I could and I'm hoping the rest will come out while idling. Theres no way it would cause low compression already.

But if you somehow screwed up the head gasket during install your compression could be down.
 

cophotoguy

Probationary Member
19
0
Aug 3, 2012
Colorado Spring, Colorado
Your trying to run a car with no gas? I think the problem is obvious.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Top