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#21
11-10-2013, 09:47 AM
Hummer Novice
Join Date: Mar 2009
Posts: 18
Re: Hard Start only when warm H2 2003
Well just changed the regulator and fuel filter and no difference. The O rings were brittle so gave me some justification to change out regulator anyway. 2 last stops, leaky injector and bad fuel pump. Off to find that "braided section" Thanks HUmtech!
#22
12-02-2013, 10:38 AM
Hummer Novice
Join Date: Mar 2009
Posts: 18
Re: Hard Start only when warm H2 2003
Just an update. Checked the pressure at the rails. It was a weak 35 lbs at idle. Changed out the fuel pump , again! Only 1 year old and solved the delayed startup and excessive cranking issues instantly. Must start a thread on the best aftermarket fuel pump. I went with Denso as it had the highest year warranty of 2 years. Cheers!
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