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Re: M38A1 -- Idle's OK, Stalls on Acceleration
On Mon, 13 Aug 2007 12:32:46 -0000, "steve.newhouse"
<steve.newhouse@gmail.com> wrote: >Hi, > >I have a '53 M38A1 with what seems like a very "diagnosable" issue. >The engine was rebuilt about 3 years ago and has a the correct carb. >I leave it in MA during the winter, so it sits for about 8 months at a >time before being driven again during the summer. > >On to the symptoms: > >The car was running fine until about two weeks ago when it began to >stall out when you step on the gas. It starts and idles well, but as >soon as I step on the gas, it revs a little bit then dies until I let >up on the gas again. > >I'm not sure if the engine is flooding or starving (is there an easy >way to tell)? Any idea what would cause this? > >-Steve I agree with Chris & Muddog that it sounds like an accelerator pump problem. Sitting that long without running could cause the rubber seals to dry up. Changing the fuel filter would also be a wise idea because old gasoline will develope into a "laquer". If you let it sit very long, I would reccomend using "Stabil" (gas stabilizer) to help prevent tha laquer build up Good luck, Darrell |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
d wrote:
> On Mon, 13 Aug 2007 12:32:46 -0000, "steve.newhouse" > <steve.newhouse@gmail.com> wrote: > >> Hi, >> >> I have a '53 M38A1 with what seems like a very "diagnosable" issue. >> The engine was rebuilt about 3 years ago and has a the correct carb. >> I leave it in MA during the winter, so it sits for about 8 months at a >> time before being driven again during the summer. >> >> On to the symptoms: >> >> The car was running fine until about two weeks ago when it began to >> stall out when you step on the gas. It starts and idles well, but as >> soon as I step on the gas, it revs a little bit then dies until I let >> up on the gas again. >> >> I'm not sure if the engine is flooding or starving (is there an easy >> way to tell)? Any idea what would cause this? >> >> -Steve > > I agree with Chris & Muddog that it sounds like an accelerator pump > problem. Sitting that long without running could cause the rubber > seals to dry up. Changing the fuel filter would also be a wise idea > because old gasoline will develope into a "laquer". If you let it sit > very long, I would reccomend using "Stabil" (gas stabilizer) to help > prevent tha laquer build up > > Good luck, > Darrell Well, I always figured the 'accelerator' pump was so named because it gives an 'extra' shot of gas for 'acceleration'.... It isn't needed for running..... If it is bad, the engine will stumble or bog on 'acceleration', it won't up and die until you let off the gas.... Just on the ones 'I' have seen anyway.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
d wrote:
> On Mon, 13 Aug 2007 12:32:46 -0000, "steve.newhouse" > <steve.newhouse@gmail.com> wrote: > >> Hi, >> >> I have a '53 M38A1 with what seems like a very "diagnosable" issue. >> The engine was rebuilt about 3 years ago and has a the correct carb. >> I leave it in MA during the winter, so it sits for about 8 months at a >> time before being driven again during the summer. >> >> On to the symptoms: >> >> The car was running fine until about two weeks ago when it began to >> stall out when you step on the gas. It starts and idles well, but as >> soon as I step on the gas, it revs a little bit then dies until I let >> up on the gas again. >> >> I'm not sure if the engine is flooding or starving (is there an easy >> way to tell)? Any idea what would cause this? >> >> -Steve > > I agree with Chris & Muddog that it sounds like an accelerator pump > problem. Sitting that long without running could cause the rubber > seals to dry up. Changing the fuel filter would also be a wise idea > because old gasoline will develope into a "laquer". If you let it sit > very long, I would reccomend using "Stabil" (gas stabilizer) to help > prevent tha laquer build up > > Good luck, > Darrell Well, I always figured the 'accelerator' pump was so named because it gives an 'extra' shot of gas for 'acceleration'.... It isn't needed for running..... If it is bad, the engine will stumble or bog on 'acceleration', it won't up and die until you let off the gas.... Just on the ones 'I' have seen anyway.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
d wrote:
> On Mon, 13 Aug 2007 12:32:46 -0000, "steve.newhouse" > <steve.newhouse@gmail.com> wrote: > >> Hi, >> >> I have a '53 M38A1 with what seems like a very "diagnosable" issue. >> The engine was rebuilt about 3 years ago and has a the correct carb. >> I leave it in MA during the winter, so it sits for about 8 months at a >> time before being driven again during the summer. >> >> On to the symptoms: >> >> The car was running fine until about two weeks ago when it began to >> stall out when you step on the gas. It starts and idles well, but as >> soon as I step on the gas, it revs a little bit then dies until I let >> up on the gas again. >> >> I'm not sure if the engine is flooding or starving (is there an easy >> way to tell)? Any idea what would cause this? >> >> -Steve > > I agree with Chris & Muddog that it sounds like an accelerator pump > problem. Sitting that long without running could cause the rubber > seals to dry up. Changing the fuel filter would also be a wise idea > because old gasoline will develope into a "laquer". If you let it sit > very long, I would reccomend using "Stabil" (gas stabilizer) to help > prevent tha laquer build up > > Good luck, > Darrell Well, I always figured the 'accelerator' pump was so named because it gives an 'extra' shot of gas for 'acceleration'.... It isn't needed for running..... If it is bad, the engine will stumble or bog on 'acceleration', it won't up and die until you let off the gas.... Just on the ones 'I' have seen anyway.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
d wrote:
> On Mon, 13 Aug 2007 12:32:46 -0000, "steve.newhouse" > <steve.newhouse@gmail.com> wrote: > >> Hi, >> >> I have a '53 M38A1 with what seems like a very "diagnosable" issue. >> The engine was rebuilt about 3 years ago and has a the correct carb. >> I leave it in MA during the winter, so it sits for about 8 months at a >> time before being driven again during the summer. >> >> On to the symptoms: >> >> The car was running fine until about two weeks ago when it began to >> stall out when you step on the gas. It starts and idles well, but as >> soon as I step on the gas, it revs a little bit then dies until I let >> up on the gas again. >> >> I'm not sure if the engine is flooding or starving (is there an easy >> way to tell)? Any idea what would cause this? >> >> -Steve > > I agree with Chris & Muddog that it sounds like an accelerator pump > problem. Sitting that long without running could cause the rubber > seals to dry up. Changing the fuel filter would also be a wise idea > because old gasoline will develope into a "laquer". If you let it sit > very long, I would reccomend using "Stabil" (gas stabilizer) to help > prevent tha laquer build up > > Good luck, > Darrell Well, I always figured the 'accelerator' pump was so named because it gives an 'extra' shot of gas for 'acceleration'.... It isn't needed for running..... If it is bad, the engine will stumble or bog on 'acceleration', it won't up and die until you let off the gas.... Just on the ones 'I' have seen anyway.... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
Hey your carb may also be clogged. You may want to spray some carb
cleaner in it. To see what happens. My brother has a 61 falcon and it would do about the same thing as you are saying sprayed some carn cleaner in it seem to run after ( now it has about 5 fuel leaks by the engine and one on top of one of the HOT exhaust manifold so can not be driven). you all have fun off roading |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
Hey your carb may also be clogged. You may want to spray some carb
cleaner in it. To see what happens. My brother has a 61 falcon and it would do about the same thing as you are saying sprayed some carn cleaner in it seem to run after ( now it has about 5 fuel leaks by the engine and one on top of one of the HOT exhaust manifold so can not be driven). you all have fun off roading |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
Hey your carb may also be clogged. You may want to spray some carb
cleaner in it. To see what happens. My brother has a 61 falcon and it would do about the same thing as you are saying sprayed some carn cleaner in it seem to run after ( now it has about 5 fuel leaks by the engine and one on top of one of the HOT exhaust manifold so can not be driven). you all have fun off roading |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
Hey your carb may also be clogged. You may want to spray some carb
cleaner in it. To see what happens. My brother has a 61 falcon and it would do about the same thing as you are saying sprayed some carn cleaner in it seem to run after ( now it has about 5 fuel leaks by the engine and one on top of one of the HOT exhaust manifold so can not be driven). you all have fun off roading |
Re: M38A1 -- Idle's OK, Stalls on Acceleration
Even a plugged up air filter will kill top end.
Mike Jamie Mello wrote: > Hey your carb may also be clogged. You may want to spray some carb > cleaner in it. To see what happens. My brother has a 61 falcon and it > would do about the same thing as you are saying sprayed some carn > cleaner in it seem to run after ( now it has about 5 fuel leaks by the > engine and one on top of one of the HOT exhaust manifold so can not be > driven). > > > > you all have fun off roading > |
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