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Author Topic: engine stumbles  (Read 2725 times)

slong27

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engine stumbles
« on: May 24, 2013, 10:24:17 PM »
Anyone have any ideas for this. 91 m42 rebuilt several years ago. Recently after driving for a mile or so when cruising at mid throttle the engine seems to forget where the throttle is and starts to stumble for no good reason. Replaced the tps without any effect. If you apply WOT engine pulls fine without any problems. 
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alpine

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Re: engine stumbles
« Reply #1 on: June 01, 2013, 12:41:52 PM »
i have been having a very similar issue at idle.. i have replaced everything.. not sure what it is. would be curious to knwo whats up!
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bme30

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engine stumbles
« Reply #2 on: June 01, 2013, 01:33:13 PM »
Vac leak?
Plugs/wires?
Fuel pump/fuel filter?

Try those if you didnt already
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slong27

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Re: engine stumbles
« Reply #3 on: June 03, 2013, 01:57:20 PM »
thanks bme30. I'll check these and see what I can find.
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