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10-31-2012, 09:38 AM | #21 |
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Re: Engine cutting out
THis is a really interesting case. The 2nd gear-only effect and no backfiring are real puzzlers. I guess the absence of backfiring supports the fuel starvation theory--no raw fuel to be passed on to the exhaust. But it would have to be nearly complete shutoff, not just leaning out. So, I'm thinking something like MassAMan or Benson suggest must be going on--but why only in 2nd gear; if it's a WOT effect sucking lots of gas, there's never a higher flow rate than wide open throttle in 1st gear. Must be some really subtle intermittant blockage that requires a high but not-too-high flow rate, I guess.
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10-31-2012, 09:53 AM | #22 | |
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Re: Engine cutting out
Quote:
The tank has a pinhole in it but, it has been there for years and no other fixes have done. The inside of the tank is clean as a pin and there is no rust dust in the sediment bowl or the carb bowl so there is none in the tank. Opening the valve, the fuel drains into a glass jar clean and doesn't slow down in a half quart. I don't think I would use a half quart in a mile or two even at full throttle no matter what gear.
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10-31-2012, 09:57 AM | #23 | |
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Re: Engine cutting out
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10-31-2012, 10:02 AM | #24 | |
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Re: Engine cutting out
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10-31-2012, 02:16 PM | #25 | |
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Re: Engine cutting out
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Steve |
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10-31-2012, 03:53 PM | #26 |
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Re: Engine cutting out
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10-31-2012, 04:26 PM | #27 |
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Re: Engine cutting out
I don't baby my car BUT, I build the motors so, I figure I will find out what the limits are and where I make mistakes by running the krap out of it. So far 10,000 miles and this is the only problem. I do remember that the last time I drove it, it topped out at about 55 in third. I am just going to have to do some experimenting to see what is the deal.
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10-31-2012, 04:42 PM | #28 | |
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Re: Engine cutting out
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10-31-2012, 04:49 PM | #29 | |
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Re: Engine cutting out
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10-31-2012, 04:59 PM | #30 |
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Re: Engine cutting out
It could be heat related, WOT cold or hot? James does it make any difference?
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10-31-2012, 07:20 PM | #31 |
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Re: Engine cutting out
No, I just removed the line and tested it because I wanted to make sure the tank and line was clear. I'll try that tomorrow and see how the valve and carb runs.
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10-31-2012, 07:22 PM | #32 |
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Re: Engine cutting out
Temp doesn't matter, it does it cold or hot. It is going to be warmer tomorrow and maybe I can work on it a little.
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11-01-2012, 10:47 AM | #33 |
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Re: Engine cutting out
James,
There was talk awhile back about some of assembled types of float valves that didn't flow enough fuel?? Have you tried an original type, SIMPLE, needle & seat float valve? Bill W.
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