first my opti now thissss...??
Thread Starter
Intermediate
Joined: Mar 2004
Posts: 35
Likes: 0
From: Overland Park KS
first my opti now thissss...??
i just replaced my opti and got a new water pump while i was at it because my car has 104k so i thought it was about time anyways..... that was about 2 months ago.... now my car has a new problem, after driving home one day i pulled up and came to a stop and noticed my car wanting to die on me and then finally just dieing(it first started bogging down below idle then eventually just stopped)... so i started it back up but not without alot of trouble, then got out and looked under the hood and all that i could here was a ticking(not a knocking) which seemed like it was coming from around the cam(not positive)... so i got back in and decided to pull it into the garage.. with my first touch of gas i got a loud backfire and then it putted in....i was just wondering if anyone has had this problem or one similar, or if anyone might be able to help me out.... i just got it out the shop and now it gotta go back-- please help meee
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: first my opti now thissss...?? (johnandblairspolovet)
Sounds like to much fuel, could have a leaking injector. Go get a fuel pressure gage or stop by and we could stick mine on there. That year do you have? If its 94' or older we can hook up my scan tool and see whats going on if the fuel pressure is good and holding.
Let me know.. Denver :seeya :flag
[Modified by C4Crazy787, 10:44 PM 4/4/2004]
Let me know.. Denver :seeya :flag
[Modified by C4Crazy787, 10:44 PM 4/4/2004]
Thread Starter
Intermediate
Joined: Mar 2004
Posts: 35
Likes: 0
From: Overland Park KS
Re: first my opti now thissss...?? (C4Crazy787)
C4Crazy787, it is a 94 and it sounds like that could possibly be the problem.. im gonna check it out and if i cant figure it out... i might have to take you up on pluggin it in and seeing whats going on with it... if that is still a possibility i would greatly appreciate it. if it is how should i contact you?
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: first my opti now thissss...?? (C4Crazy787)
I would check the IAC... it will cause the engine to die when idling.
Check the fuel delivery, of course...
[Modified by bogus, 8:41 AM 4/6/2004]
Check the fuel delivery, of course...
[Modified by bogus, 8:41 AM 4/6/2004]
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Thread Starter
Intermediate
Joined: Mar 2004
Posts: 35
Likes: 0
From: Overland Park KS
Re: first my opti now thissss...?? (bogus)
welllll...... today i decided to try and start it up.... so i did and it started up but with a little hesitation, however it was running fine, no noises, backfiring.. so i let it warm up to about 190 then i drove it about 5 miles.... until i stopped and parked to pop the hood and see how it was doin, after about 2 minutes of being parked it started the same thing(starting to die until finally it just stopped running).... so i waited a little and tryed to start it and it started barely and i drove it home and barely got back.... if it was a fuel problem shouldnt it have experienced that right when it started up? and does it matter that after i got it started back up after it died that it would be fine while cruising but then when it got to a stop it would start trying to die?
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: first my opti now thissss...?? (johnandblairspolovet)
and if it turns out to be that my fuel pressure is the problem should i get a new fuel pressure regulator??(stupid question)
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: first my opti now thissss...?? (ittlfly)
install a pressure gauge on the fuel rail.
Turn on the key, and read the pressure. should be 38 lbs.
Take a pair of pliers or a clamp or crimp off the fuel line at the tank.
turn off the key and watch the gauge... if it drops, you have a problem in the fuel delivery.
if the guage maintains, then you have a good fuel delivery.
remove the clamp and watch the gauge. It should hold. If not, you have a problem with the fuel pump. The internal check valve is done.
Also, check the connections on the fuel pump harness. They have a tendency to get buggered up.
Turn on the key, and read the pressure. should be 38 lbs.
Take a pair of pliers or a clamp or crimp off the fuel line at the tank.
turn off the key and watch the gauge... if it drops, you have a problem in the fuel delivery.
if the guage maintains, then you have a good fuel delivery.
remove the clamp and watch the gauge. It should hold. If not, you have a problem with the fuel pump. The internal check valve is done.
Also, check the connections on the fuel pump harness. They have a tendency to get buggered up.
Intermediate
Joined: Nov 2003
Posts: 36
Likes: 0
Re: first my opti now thissss...?? (johnandblairspolovet)
I just replaced my optispark also. 1000$ thanks GM I also noticed a ticking within the last month. I find that if I wiggle my spark plug wires it stops. now I just need to replace the ticking wire.
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: first my opti now thissss...?? (johnandblairspolovet)
On the right side (passenger side) fuel rail between # 4 and 6 injector is a valve that look likes a tire valve remove the cap and with a rag and a small screw driver make sure to release any pressure, install the gage, the turn on the key but don't start the car. You should have atleast 41 psi, mine reads 42. Then if there are no leaks you can start the car, the pressure will drop some due to the vacuum applied to the regulator.
Oh yea the best money I spent on my Vette was the 90$ for the GM service manual. Get one here http://www.helminc.com if you plan to do much work on your Vet.
[Modified by C4Crazy787, 9:01 PM 4/7/2004]
Oh yea the best money I spent on my Vette was the 90$ for the GM service manual. Get one here http://www.helminc.com if you plan to do much work on your Vet.
[Modified by C4Crazy787, 9:01 PM 4/7/2004]