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Username Post: 99 Chevy van timing        (Topic#357996)
gchemist 
Senior Chevytalk Moderator
Posts: 24900
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
09-09-19 11:36 AM - Post#2775154    

Ok, a friend called me on a non running Vortec van. They believed it was a fuel pressure problem. I check it. It primes to 60 PSI and stays above 55 with ignition off. So I rule that out. I pour a little fuel down the TB and crank it. Quick back fire indicated bad timing. The ignition module is being checked. While removing the ignition module, I notice the distributor is loose. It turned all over the place. The ignition module will probably test good.
Will setting the distributor to DTC and crank mark to 0 be enough? I've done distributor swaps before but this has been cranked multiple times.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
jktucker92 
Silver Supporting Member
Posts: 299
jktucker92
Loc: West Richland, WA
Reg: 02-05-17
09-09-19 01:22 PM - Post#2775160    
    In response to gchemist

You may have better luck with the '88 to '98 forum, because the Vortec engines in the '99 trucks are LSx variants and do not have a distributor. That said, adjusting the distributor may fix the no start condition. However, I'm not sure there's a mark on that engine that will be easy to see. Also, as I recall, you have to have a diagnostics computer (like a Tech II) to put the vortec engine in a mode to adjust the timing and reset the code. The computer does monitor the timing in relation to the cam sensor and adjusts it accordingly.



 
gchemist 
Senior Chevytalk Moderator
Posts: 24900
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
09-09-19 02:30 PM - Post#2775170    
    In response to jktucker92

Oh, yea cross over year for vans.
I was thinking about just turning the distributor until it starts. However I don't know how bad it would run, so setting it back to 0 is good.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
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