i think its a miss? im not sure please help.

coco95z28
12-17-2008, 09:54 PM
a little background on the car...

95 z28 LT1 110,000k miles STOCK motor. (all apearence)

the car sits in storage unit for like 1-2 weeks at a time. so i drove it like 3 days ago, ran fine and i parked it. went there today to move it out a little to wash the floor (oil stain) :rolleyes:

i sit in and crank it for like 10 seconds with NOTHING. so i turn the key off. now i have the fuel gauge on the a-piller. and it was/still reading 35-40 psi. and the pump was priming.

so i push the gas a little and crank it. fires right up but dies RIGHT away (8-10 times)

so i get mad and floor it, turn the key and the damn thing goes up to 3k rpm, i keep it there for like 10 seconds, but it was running VERY rough and LOUD. also ALOT of smoke (not black just normal gray and white) because it was 25* outside.

anyway after about 10 seconds of doing that i feel a jolt and in a second the car sounds and runs fine. i even let off the gas and let it sit for 10 mins while i did the floor. shut it off and re-started it like 5-6 times with no problem.

NO CHECK ENGINE LIGHT TOO.

im afraid to take the car out now lol ;)

FYI,........ very bad water pump leak last year. (about 10k miles ago though)
when i changed the pump the opti was all green and shyt from the anifreeze. but i think its the origional opti. (last owner said he never changed it)

Green96Z
12-18-2008, 01:30 PM
FYI,........ very bad water pump leak last year. (about 10k miles ago though)
when i changed the pump the opti was all green and shyt from the anifreeze. but i think its the origional opti. (last owner said he never changed it)

Is that same opti in there, or did you change it?

coco95z28
12-18-2008, 04:34 PM
same. it ran fine for 10k miles though... and it was wierd because it just ran fine after it did that. sound like the opti? or fuel injector?

coco95z28
12-18-2008, 06:56 PM
update:.......

went there after work and turned the key, fuel pressure primed at 25 and then falls to
20... stated right up though. first turn.

freethrowchamp
01-01-2009, 12:55 PM
i would check simple stuff like plugs. or even your battery. the computer wont run unless you have 12.4 volts or something like that

Injuneer
01-01-2009, 01:43 PM
What's the fuel pressure with the engine idling? 25psi isn't enough.