C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Needing ideas (HELP!!!)

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Old Aug 4, 2002 | 07:58 PM
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Default Needing ideas (HELP!!!)

Well all, I have the motor back together after having it all apart for a valve job. It is an 86. I have put piston one at TDC and made sure the Distributer is at the right position. When I crank the engine, she does not start. I have felt each exhaust pipe coming from the cylinders and each one is hot which leads me to believe fuel is getting in and there is spark. I have tried moving the distributer to see if that helps but it does not and I have the wire disconnected that the computer uses for timing. (Can't remember what the wire is called. sorry.)

Any ideas for me to look at???

Thanks in advance!!! :confused: :mad
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Old Aug 4, 2002 | 08:32 PM
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Default Re: Needing ideas (PonyH8R)

TTT

Any ideas? I am soo lost at this point. I even put in new plugs and wires. :cry
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Old Aug 4, 2002 | 08:49 PM
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Default Re: Needing ideas (PonyH8R)

So you just pulled the intake & heads to do a valve job or was the motor out?

How did you adjust the valves?

Check fuel pressure at the rail after turning the key On.
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Old Aug 4, 2002 | 08:58 PM
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Default Re: Needing ideas (65Z01)

The motor was left in. Pulled the heads and intake and took the heads to the machine shop to have the valves done.

I adjusted the vavles by putting piston one in TDC and tightened the valves until the rods just stopped moving freely, then put number 8 in TDC and did the same and then kept going until all pistons were done.

Fuel pressure checked out good.
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Old Aug 4, 2002 | 09:39 PM
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Default Re: Needing ideas (PonyH8R)

TTT

Any other suggestions? Just does not make since to me. It acts like it wants to start. Like I said the pipes are hot, so I know there is spark and fuel. The exhaust from the headers on are not connected since the Y pipe does not connect to the headers and I have to take it to a place to get them installed, but first I have to get the car running. But having the pipes off and only having the headers on would not cause the car not to start, right?

:confused:
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Old Aug 4, 2002 | 09:44 PM
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Default

Fuel pressure at schrader valve?

Have you checked the spark plugs to make SURE they are getting spark?

Good compression?
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Old Aug 5, 2002 | 12:22 AM
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Default Re: (scorp508)

Fuel Pressure = 35psi
Spark plugs = all spark except I discovered number 6 being broken when I went to remove the wire. :(

Compression test = ranged from 120psi to 145psi.

So my next question, will one broken plug cause it not to start? It is too late to go out and buy a new one so I will have to tomorrow.

Thanks for the help so far. :cheers:
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Old Aug 5, 2002 | 09:44 AM
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Default Re: Needing ideas (PonyH8R)

You have piston one at TDC but is it 180 degrees off?
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Old Aug 5, 2002 | 10:00 AM
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Default Re: Needing ideas (Blue88)

One bad or broken plug won't prevent it from starting.......it would just miss on that hole.........I would vote for it being out of time............. or flooded............. try to redo the dist installation drill again .......... make SURE #1 is at tdc on the compression stroke ,,,,,...........is the balancer ok?........... maybe it has slid and you might be indexing wrong?....... :seeya
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Old Aug 5, 2002 | 10:40 AM
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Default Re: Needing ideas (vettmech)

I will try this. Is there a best way to find TDC? Can anyone give me their secrets? :)

Thanks for all the help to this point all! :cheers:
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Old Aug 5, 2002 | 10:42 PM
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Default Re: Needing ideas (PonyH8R)

TDC is found on the compression stroke when BOTH valves are closed. The other time it come to the top of a stroke is on the exhaust stroke and the exhaust valve is open at that time.

Hope you don't mind a tip from a PonyOwnr ;)
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Old Aug 6, 2002 | 12:02 AM
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Default Re: Needing ideas (LaVidaLoca)

Thank you "PonyOwnr" :) and thanks to all the other cool people on this forum. My baby is alive!!!! The timing was not correct but 180 degrees off. Now she is very loud and purring. Now I just have to get the exhaust hooked up to the headers so the law doesn't hate me as well as the neighbors. :yesnod:

You all are awesome!!!! :cheers:
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