Question about 2002 Pontiac Montana

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2002 Montana sputter/bucks at 2000 rmp

2002 Montana bucks or sputters at 2000 RMP's and will not go above that.
Gas gauge was just less than a quarter. Temp. was minus -18. I filled it up and got 1 block from the gas station and it started bucking when I trying to pull away. I had to easy it on. I pulled into the local Wal-Mart, another block from the gas staion, and pull in 450 ml of gas line anti-freeze and injector cleaner. Still did not fix problem. I had to drive 225 kms to get home. I slowly got it up to 95 kph on the hwy and had no problems, but could not get ot higher without it bucking. I was thinking >>

1. Water in the gas
2. Fuel filter
3. Gas cap
4. Return line partly plugged

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  • shawn haugen Aug 04, 2012

    i have the same problem did the timing chain and did not solve the problem fuel psi was 55



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Get timing checked

Posted on Dec 08, 2008


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