Failing Fuel Pump?

vwdriverfoundvw · Posted: Sun Jan 07, 2007 7:59 pm Post subject: Failing Fuel Pump?

What are the symptoms of a failing fuel pump?

I just had to tow my bus a mile to get home. I replaced the fuel lines today and now the engine will run but cant power the bus and cuts off. After installing the new lines it ran great and I drove it down the street. Suddenly it started running sluggishly and I had to keep the rpms high to keep it going. Then it seemed to get progressively worse until now I cant get it to run enough to push the bus at all.

I checked the lines to see if they had become clogged but there was nothing. The only thing I can think of is that the fuel pump happened to start failing right after I put the new lines on.

VDubTech · Posted: Sun Jan 07, 2007 8:15 pm Post subject:

Check the fuel filter?

vwdriverfoundvw · Posted: Sun Jan 07, 2007 9:36 pm Post subject:

I put a new filter on a couple weeks ago, and finished up the new fuel lines today.

Randy in Maine · Posted: Mon Jan 08, 2007 4:28 am Post subject:

What kind of fuel pressure is it putting out? Test it with the appropriate gauge for carbs or FI.

vwdriverfoundvw · Posted: Mon Jan 08, 2007 7:44 pm Post subject:

Well I dont think it is the fuel pump now. The engine is definitely getting gas. I pulled the plugs after trying to run it for a couple minutes this afternoon and the #1 and #2 plug were cold while #3 and #4 were warm. Also 1 and 2 have quite a bit of carbon deposits on them while 3 and 4 look normal with a slight amount of oil on them. I think one of my carbs might have a problem.


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