Problem with lq4
Thread Starter
On The Tree
Joined: Mar 2009
Posts: 100
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Problem with lq4 I was driving today and i noticed i was losing power it seemed like. I went to floor it just to see what would happen and it barely went, than things went downhill and it would barely run. It idles real rough for about 5 seconds when i start it then gets normal. It was fine this morning but now its not. I noticed that when i got it home at like 15 miles an hour the fuel pump was really loud like it wasn't getting any fuel. It sounded like it was just spinning. There is a hose that connects the fuel pump and the fuel line inside the tank, I was thinking maybe that broke. Any suggstions or opinions are welcome and appreciated.
perhaps you answered your own question? Check the line, perhaps the pump is gone. pull the return line off your fuel rail, or off the regulator, place in a bucket and have someone turn the key so the fuel pump cycles. See if it is returning fuel or not.
You A kit like this:
http://www.summitracing.com/parts/SUN-CP7838/
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Thread Starter
On The Tree
Joined: Mar 2009
Posts: 100
Likes: 0
ok heres what i found. I put a guage on the rail and I had twenty pounds so i obviously knew there was a problem. I pulled the tank and found that the hose in between the fuel feed line and the pump had almost come off the pump so i put a new high pressure hose on and double clamped. I started it up and had exactly 60 pounds at idle so i thought i had it. I took it out on the highway by the house and did a test run. I floored it and it ran great until second gear and then it fell off and acted like it was starving for fuel again. It runs good to about 2800 rpms and then acts like it has no fuel or something like that. It idles fine and starts fine so I am stumped here. I have an inline fuel filter on the frame rail and am kinda wondering if it may be holding the volume of fuel needed back. It is the original stlye filter form the 88 suburban the engine is it. Other than that i really don't know. Like i said it has great power until about 2800 rpms or so.
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