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#1
02-25-2010, 04:57 PM
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need confirmation of my thinking
1996 k1500 5.7 auto 175000 miles. a couple of months ago the truck started being hard to start. before turn the key it fires now you have to crank for 5 to 10 seconds. there is a misfire that started. the exhaust note on the passenger bank sounds different. i changed the plugs and two on that side smelled of fuel but were otherwize normal. i checked the fuel pressure and its 57 cold and hot and running but if i cut the key off it imidiatly drops to 20 where it holds for a few minutes before going to zero. I am thinking the regulator is shot and that the fuel pump is getting weak. I am planning on replacing the regulator this weekend as i need to do the intake gasket anyway.
sound about right to you gurus?
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2006 Chevy Uplander ls 3.5 128,000 1997 Buick Lesabre 3.8 and 135,000 1996 Chevrolet K1500 5.7 185,000 plus a 66 belair 65 gmc 70 c10 and a ford 
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#2
02-26-2010, 12:20 AM
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Re: need confirmation of my thinking
Sounds good to me. I too went through that, although now it seems the pickup is running lean and still losing fuel pressure, so in the tank I come!
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-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<-----
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#3
02-26-2010, 02:08 AM
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Re: need confirmation of my thinking
also...might be check valve in the fuel pump. shut it down and immediatly clamp off the return and see what the fuel pressure does.
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| fuel , hard , missfire , pump , start |
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