5 seconds of cranking to start

Cody Forbes cody at 5000tq.com
Wed Oct 10 20:39:37 PDT 2007

No, it means you have a lack of fuel pressure when starting. Likely causes 
are as listed before... fuel pump check valve, fuel pressure accumulator, 
o-ring on the fuel pressure relief valve in the distributor, warm-up 
regulator, and leaky injectors (I feel like I'm leaving something out...).

All of the above tend to be close to equally probable, but I'd start with 
the check valve on the fuel pump. Really without a gauge it's like going 
deer hunting with a big rock... you may eventually get lucky, but you won't 
be anywhere near accurate. Of course in this case eventually after you've 
replaced enough stuff you will fix it, but I'd bet you'd be clear of what 
you paid for the car at that point, not to mention waaaaay over what a fuel 
pressure tester would cost.

-Cody Forbes
'87 5ktq - Fast.
'86 5ktqCD
'86 5k
'86 5k

JeffreyZentner at aol.com wrote:
> Hi All
> I put a fuse in the fuel pump relay and turned on the key after a
> moment the fuel pump started. I let it run for 3 or 4 seconds and
> then engaged the
> starter and the engine started immediately. Does this mean that I
> have a lack of fuel presser when running? If yes what is the most
> probable cause?
> Jeff Zentner
> Alta CA
> 88 5KTQ
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