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-   -   Hard Starting (https://www.corvetteforums.com/forum/corvette-c4-forum-14/hard-starting-3171/)

fille9 09-18-2006 09:20 PM

Hard Starting
 
When my 88 is cold she fires right up. When she is warmed up, she cranks and cranks and I have to pump the gas to get it started.. It takes about 5 seconds.. This is not right. Any help appreciated...

94blackC4 09-18-2006 11:03 PM

RE: Hard Starting
 
I have the same problem in my car and i am HOPEFULLY going to be taking it to a corvette specialist tomorrow and ask them what they think it is.

In my car though, it used to fire up when it was cold, but now it doesnt fire up right away EVER. I have to crank it up and pump the gas EVERY single time. Anyway, i will relay whatever they tell me to you and hopefully we can get rid of this un-godly and embarassing problem!

raisinbran 09-19-2006 02:27 AM

RE: Hard Starting
 
you may have a leaking fuel injector. check the fuel pressure and let us know!

94blackC4 09-19-2006 08:02 AM

RE: Hard Starting
 
I was told the same thing Raisin... i just changed all of my fuel injectors and still have the same problem. I went from the stock 22lbs/hr or whatever it was to 30lbs/hr and the problem still exists.

mech259 09-19-2006 09:08 AM

RE: Hard Starting
 
Did you look at my post in the other forum (Injector Help) on the same subject on what else to check?

94blackC4 09-19-2006 08:54 PM

RE: Hard Starting
 
Yes sir i sure did. I had the fuel pressure checked today and they said it was fine. I didnt check the spark or anything else but the guy (an actual Corvette SPECIALIST this time) told me to change my spark plugs and wires because the dumb @$$e$ that worked on my car put Bosch Plugs and probably the CHEAPEST wires they could find on it. The guy told me he had never seen that kind of wires ever, much less on a Corvette. Which means he either hasnt seen that many wires (not likely because ive never even heard of the type and couldnt tell you the name without running out to my car to check if the name is even on the wires, and because he has about 20 vettes sitting outside of his shop right now) or that they are just very crappy wires. And so I am going to change the wires and plugs and he said that if thats not the problem, he would like to run a diagnostic on it, but he said he is pretty sure it would be the distributor, as my car is approching the 100K mark in the next 2 weeks (based off of my average mileage every week). SOOOOOO, fille9, what kind of plugs and wires do you have in your car? You might check that. But also the fuel pressure like mech is saying. That could be very helpful.

Oh, and btw mech... I was told by the people that worked on my motor that 30lb injectors would be a good size. I was told by the Corvette guy that 30lbs is something you put on like a 383 or larger motor. He said that the stock 23lb injectors are plenty but if i went to 24lbs, then i would have more than enough. So now i have to get new injectors and take the 30lb ones out. Doesnt it kinda sound like i entrusted my car to these people that are no smarter than a bunch of baboons with wrenches? Just thought i would share that with you.

TopSpeed 09-19-2006 09:17 PM

RE: Hard Starting
 


ORIGINAL: 94blackC4

Oh, and btw mech... I was told by the people that worked on my motor that 30lb injectors would be a good size. I was told by the Corvette guy that 30lbs is something you put on like a 383 or larger motor. He said that the stock 23lb injectors are plenty but if i went to 24lbs, then i would have more than enough. So now i have to get new injectors and take the 30lb ones out. Doesnt it kinda sound like i entrusted my car to these people that are no smarter than a bunch of baboons with wrenches? Just thought i would share that with you.
Sweet Lord, Matt... when you first mentioned that I did think that was quite the large injector size for your setup but also thought those guys knew what they were doing so I kept quiet. I really am quite certain now that your assertion regarding baboons and wrenches and such is pretty much bang on the money. I am so sorry about the woes, bro.... I've never seen anyone have such problems with mechanical work before... you have my best wishes that this stuff gets sorted out for you, and quick now.

94blackC4 09-19-2006 09:41 PM

RE: Hard Starting
 
I appreciate it Scotty, you always wish me the best :D and i thank you for that. I just cant wait to see the looks on their faces when they realize that i have checked up on everything they did and just because i am 20 years old doesnt mean i dont know sh*t about cars. I probably know more than they know. They have quite a bit coming to them tomorrow. I hope i get off before they close now lol. Or else it will look like i talked a big game but couldnt produce.

Matt

TopSpeed 09-19-2006 09:44 PM

RE: Hard Starting
 


ORIGINAL: 94blackC4

I appreciate it Scotty, you always wish me the best :D and i thank you for that. I just cant wait to see the looks on their faces when they realize that i have checked up on everything they did and just because i am 20 years old doesnt mean i dont know sh*t about cars. I probably know more than they know. They have quite a bit coming to them tomorrow. I hope i get off before they close now lol. Or else it will look like i talked a big game but couldnt produce.

Matt
Matt, my friend, you DO know more than those guys. No doubt about it. My stomach is turning for you here this afternoon with all this news. I feel like grabbin some munitions and heading down there to back you up. ARGH! Keep us posted, bro, I am 10000% certain you are going to get to the bottom of all this. I'll definately be thinking of you tomorrow as you fight the good fight.

mech259 09-20-2006 03:55 AM

RE: Hard Starting
 
Yes, 30lb injectors would be quite a bit if your engine doesn't have the stones for it. Back to your hard start, quick, constant fuel pressure is good. Have you checked injector pulse and spark on startup to see if you have both. If you have a scan tool, go to data and see if you have rpm while cranking. If you have instant spark and injector pulse, more than likely your distro is doing its stuff. Obviously if it has spark but not so obvious is the injector pulse, since injector pulse is determined by the low resolution sensor in your opti. It has a high resolution sensor (both optical) for fine tuning spark timing and pulse rate. [8D]


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