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Old 12-08-2018   #1
Kwood
 
Join Date: May 2015
Location: Loveland, Ohio
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Default 90 Z cranks but will not start

I drove it to work, would not start to go home. Got a new battery, still cranks but will not turn over. Any ideas?


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Old 12-08-2018   #2
Dynomite
 
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Default 90 Z cranks but will not start

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Originally Posted by Kwood View Post
I drove it to work, would not start to go home. Got a new battery, still cranks but will not turn over. Any ideas?


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Why a new battery?
the starter turns the engine over but engine does not fire?
Check INJ1 fuse.


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Last edited by Dynomite; 12-13-2018 at 05:19 PM.
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Old 12-08-2018   #3
BigJohn
 
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Default Re: 90 Z cranks but will not start

Fuel Pump?
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Old 12-09-2018   #4
Kwood
 
Join Date: May 2015
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Default Re: 90 Z cranks but will not start

Yes. Battery was low, thought it did not have enough amps. I checked the fuse, it looked ok. Fuel pump was my next guess. Roll start would not work then, correct?


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Old 12-09-2018   #5
mhobtr
 
Join Date: Apr 2016
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Default Re: 90 Z cranks but will not start

Quote:
Originally Posted by Kwood View Post
still cranks but will not turn over. Sent from my iPhone using ZR-1 Net Registry

This is confusing. The starter spins the engine or not? I think you're saying the engine spins but does not start.


Quick check is to spray starting fluid in the throttle body and crank the engine. If it fires and stops, you have a fuel problem. If it doesn't fire, you have an ignition problem.
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Old 12-11-2018   #6
Kwood
 
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Default Re: 90 Z cranks but will not start

Correct. Will do that. Thanks. Sorry, for the confusion.


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Old 12-11-2018   #7
Ccmano
 
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Default Re: 90 Z cranks but will not start

Follow the FSM diagnostic tree to figure this out. Otherwise it’s just a shot in the dark. There are multitude of things that could cause this.
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Old 12-13-2018   #8
Kwood
 
Join Date: May 2015
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Default Re: 90 Z cranks but will not start

Thanks for the info. Starter fluid started the car, but did not keep it running. Guess I’m looking at a fuel problem.


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Old 12-13-2018   #9
mhobtr
 
Join Date: Apr 2016
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Default Re: 90 Z cranks but will not start

Now you can start going down the Chart A-7 posted above.

Have you checked the fuel pressure with a gauge?
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Old 12-14-2018   #10
Kwood
 
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Default Re: 90 Z cranks but will not start

No. I bought a couple of the suggested fuel pumps and am sending to the local Vette mechanic to let him run the diagnostics. Would love to say I’m a DIY guy, but I don’t have that equipment. Or a garage, after the divorce. But, I still have my Z, so that’s something.


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