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Username Post: 1995 s10 engine wont start,
Senior Member
Posts: 459

Loc: Tracy, CA
Reg: 07-18-00
08-08-19 05:20 PM - Post#2772741    
    In response to run2jc

  • run2jc Said:
That is correct sometimes it starts. Then later in the day it acts like it has no gas. Then it will start.

Four cylinder or V6?

The idea is to isolate the problem to either ignition or fuel.

Next time you get a no start:

Ignition - Put an inductive timing light on one of the spark plug wires and crank the engine over. See if the timing light flashes. If it does, it's probably a fuel issue. If it doesn't flash, it's probably an ignition issue.

(If it's an ignition issue, don't keep cranking the engine, it'll get flooded).

Fuel - Hopefully it's a V6 under the hood; remove the air cleaner lid and crank the engine over. Look for fuel spray at the injectors on top of the throttle body.

1987 IROC-Z 5.0L
1992 Lumina Euro 3.1L
2003 GMC Safari

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