[urq] Hot Start Problems Continued...

Brady Moffatt brady at regal-mtl.com
Wed May 3 12:19:49 EDT 2006

I vote for the check valve.

IIRC, on cold start, like after sitting overnight, there is no residual
pressure anyways, working check valve or not. The fuel pump pressurizes the
system so quickly that it's a non-issue. That's with cold fuel, of course.

If you have vapour lock, it's a whole other ball of wax.

My $0.018.

Cheers, Brady
83 urq,       [][] oooo [][]
86 4kq,        O O oooo O O
91 200qa20v, [  ]  oooo  [  ]
72 240Z 

-----Original Message-----
From: urq [mailto:urq at pacbell.net]

... if at all possible the best thing to do is to get a fuel pressure gauge 
in there to find out how the residual pressure is doing.

It seems to me that a FP Accum issue would impact cold as well as warm 

While I don't have BTDT myself, I've seen reports about excessive voltage 
drop in the voltage supply to the fuel pump ... that or a weak pump as 
another possible contributor.

Steve B
San Jose, CA (USA)
----- Original Message ----- 

My vote would be for the fuel pressure accumulator, if the check valve 
doesn't work, then injectors (in order of expense, of course).  If your car 
runs fine (after it starts), then your running PSI output from the FP is 
more than likely OK IMHO, although a pressure tester after shutdown would be

a good idea to see what's really happening.

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