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Re: Hills
Mini Discussion of English Mini automobiles (alt.autos.mini)
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#1
 
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Re: Hills -
06-21-2003
, 11:21 PM
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Will do Thanks The Muffin Man "Graham" <zebedee (AT) alphalink (DOT) com.au> wrote in message news:3EF31D9A.E81B4000 (AT) alphalink (DOT) com.au... The Muffin Man wrote: I had a problem at the weekend that twice my pickup ran out of petrol with a full tank (it wasn't an airlock at the cap as I fixed that a couple of years ago when I bought a new filler cap ;-). "Graham" <zebedee (AT) alphalink (DOT) com.au> wrote: Are you certain you "ran out of petrol"? Did you actually examine the carby bowl and establish that there was no petrol in it? The Muffin Man wrote: No, we presumed because of the behaviour. Fair enough, it's just that presumptions are traps when diagnosing mystery automotive ailments. For the moment, I'll take this as "behaved *just like* it had run out of petrol". OK What about hard acceleration - no problem? No problemo "Obviously" (a dangerous word when diagnosing odd problems) something about the direction of gravity interferes with proper running, apparently interfering with proper fuel delivery. I think most of us have experienced, or heard about, the wheel brace bouncing about in the boot and landing across the battery terminals in a Mini sedan, so be very careful about assuming the petrol tank is the only thing affected by the direction of gravity. Battery is in the back and there is nothing with it to cause it to short out. I really gave this more as an example of the value of defining the problem very carefully, rather than a suggested cause in this case! Do you have a fuel filter fitted? Don't have a fuel filter. Is it possible you have a big dose of either water or crud in the bottom of the fuel tank which covers the outlet when the car faces uphill? For that matter, where is the tank outlet in the pickup? The tank is new and not full of crap or water. The pickup doesn't have a fuel return system. I am perplexed. Did I see you say somewhere that it's a mechanical fuel pump too? I think it might be time to drive up a hill, stop when it wants to stop, and pull the lid off the carby bowl and see what is actually going on in there. At least then you know if you really are chasing a fuel starvation problem or something else. Once you've got the lid off, turn the motor over and see if any fuel is pumped out the supply line into the lid - see if fuel is getting as far as the needle valve? If the bowl is empty, and the fuel is pumped out the needle valve in the lid, perhaps the float is fouling in the bowl and sticking, or you have some other exotic problem with the needle valve, like it's stuck? |
#2
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Hi All I would go along with Graham.................................. " I think it might be time to drive up a hill, stop when it wants to stop, and pull the lid off the carby bowl and see what is actually going on in there. At least then you know if you really are chasing a fuel starvation problem or something else. You could also make a small 1/2 litre container , connect to the carb and gravity feed for testing, and also connect to the pump and test again, This would either highlight the tank as the culprit or vindicate it HTH Fitzy |
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