Car running like $hit. - ZR-1 Net Registry Forums

Z51JEFF · 06-21-2008

Car started running like its only got 7 cylinders.Could one of the injectors finely has died or one of the coils has died?If one of the injectors died would it store a trouble code?

06-21-2008

With the engine running, pull the spark plug boots off the plug. Listen for a change in the engine, and find out which cylinder is not firing. You should hear clicking noise of the coil firing as well. It'll get weaker the further you pull the plug boot out.

Z51JEFF · 06-21-2008

I just checked the plugs wires,no problems here but the car is running right.Go figure.Hey Jeff,can I get that jack bag?

06-21-2008

Definitely temp related then, look at injectors or coil. Check it when it's hot.

On the jack bag, yes. You still want that weatherstrip?

Z51JEFF · 06-21-2008

Quote:

Originally Posted by Jeffvette

Definitely temp related then, look at injectors or coil. Check it when it's hot.

On the jack bag, yes. You still want that weatherstrip?

When you say weatherstrip do you mean the fender skirt seals?If so yes,Ill take one side if its got the plugs in the ends.Now,will an ignition coil act up if it gets hot?I always thought when a coil goes it just goes.I was going to replace the coils when I did the injectors anyway.I had planned on working on my Nova tomorrow but maybe Ill get the Corvette up to temp and see if the problem comes back.

tomtom72 · 06-21-2008

Jeff, usually the hotter an injector and or an ignition coil gets, the worse the electrical issue becomes....it generally is the typical failure pattern.

Paul Workman · 06-21-2008

Quote:

Originally Posted by Z51JEFF

Now,will an ignition coil act up if it gets hot?I always thought when a coil goes it just goes.

Electronics is my livelihood, and in my experience 'lectric stuff often times fails as a function of heating.

The coils on our LT5 are shared between two cylinders. So, if it is a coil failing, then two cylinders would be displaying the same problem, me thinks.

8-5, 1-6, 4-7, & 3-2

So, if it is one cylinder only, then I would put the coil at the rear of the line and look at plug wire, plug, injector, etc.

P.

Z51JEFF · 06-22-2008

The miss is back,its injector time.Once I find out which is the best injector Ill start rippin.

06-21-2008	#1
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,079	Car running like $hit. Car started running like its only got 7 cylinders.Could one of the injectors finely has died or one of the coils has died?If one of the injectors died would it store a trouble code? Last edited by Z51JEFF; 06-21-2008 at 01:31 AM.

06-21-2008	#2
Jeffvette Guest Posts: n/a	Re: Car running like $hit. With the engine running, pull the spark plug boots off the plug. Listen for a change in the engine, and find out which cylinder is not firing. You should hear clicking noise of the coil firing as well. It'll get weaker the further you pull the plug boot out.

06-21-2008	#3
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,079	Re: Car running like $hit. I just checked the plugs wires,no problems here but the car is running right.Go figure.Hey Jeff,can I get that jack bag?

06-21-2008	#4
Jeffvette Guest Posts: n/a	Re: Car running like $hit. Definitely temp related then, look at injectors or coil. Check it when it's hot. On the jack bag, yes. You still want that weatherstrip?

06-21-2008	#6
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: Car running like $hit. Jeff, usually the hotter an injector and or an ignition coil gets, the worse the electrical issue becomes....it generally is the typical failure pattern. __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

06-22-2008	#8
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,079	Re: Car running like $hit. The miss is back,its injector time.Once I find out which is the best injector Ill start rippin.