fuel system

saltyjim12345
Posts: 2
Joined: Fri Feb 23, 2018 7:00 pm

fuel system

Unread post by saltyjim12345 » Fri Feb 23, 2018 7:11 pm

Often,but not always when I go up a steep hill,the van starts misfiring and continues misfiring for many miles.The fuel filter has been changed and I'm sure there is no water in the tank.

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carriedi
Posts: 2302
Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: fuel system

Unread post by carriedi » Fri Feb 23, 2018 9:30 pm

it's possible that you don't have enough fuel pressure and going up a hill takes more fuel than the pump puts out and it takes a while for the pressure to catch up afterward. Or it could be that you have a problem with the secondary ignition jumping to ground somewhere other than the spark plug under a load. Once that happens it's easier to jump outside the spark plug circuit and it will continue until the spark plug becomes the easiest path to ground again.

a bad ground that moves when the engine is torqued under a long acceleration.

does your service engine light come on? Or is it on?
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