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| Flooding SU's https://www.ausmini.com/forums/viewtopic.php?f=2&t=74631 |
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| Author: | matt850 [ Thu Dec 15, 2011 12:45 pm ] |
| Post subject: | Flooding SU's |
Hi all, been a while. Still Miniless. Anyway, A matde of mine has an issue with a pair of S/U's on a Healy. Apparently they are or one is flooding to the point where the fuel sqirts out the breather hole. Any suggestions before I head over to his place on Saturday to help. Merry Xmas to all and a happy new year. as always, Thanks in advance Cheers Matt |
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| Author: | DA9jeff [ Thu Dec 15, 2011 2:50 pm ] |
| Post subject: | |
Take the top off the fuel bowl & check the float for a puncture/cracks[fuel in the float].Or a worn/sticking jet needle. |
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| Author: | poeee [ Thu Dec 15, 2011 2:51 pm ] |
| Post subject: | |
If the float is working as it should, there might be too much fuel pressure going in. Changed the fuel pump recently? |
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| Author: | Morris 1100 [ Thu Dec 15, 2011 3:06 pm ] |
| Post subject: | |
First thing to do, hit the top of the float bowl with the plastic handle of a screwdriver. Give it one good tap. Start the motor. Does it still blow out the float bowl vent? No. Put the screwdriver away. (The tap on the float bowl has dislodged the little bit of crud holding the needle from seating.) Yes. Turn off the motor and use the screwdriver to undo the lid of the float bowl and check to see if... 1) The float is still a float. If it is half full of petrol it is no longer a float, it is now a sink. 2) Check the needle valve for any obstruction like a bit of grit or any build up of varnish on the tip of the needle. Also check the needle to see if it is worn on the tip. If none of that works then start looking at fuel delivery pressure |
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| Author: | simon k [ Thu Dec 15, 2011 3:43 pm ] |
| Post subject: | |
if the float isn't full of fuel, it's just the needle and seat not sealing take the lid off, hold it upside down and blow into the fuel inlet hole, you shouldn't be able to blow through it compare that one with the other replace both needle and seats as if one is stuffed, the other won't be far behind |
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| Author: | matt850 [ Thu Dec 15, 2011 4:30 pm ] |
| Post subject: | |
Excellent, Love the S/U's 101 lesson Morris1100. My mate is not altogether that mechanical. He'll enjoy that. Thanks all. My brother said he sees the 850 all the time up at Springwood. Still flying up and down the Mountain ata rate of knots. Damn that was a strong engine/car. Should never have let it go ! |
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| Author: | Bubbacluby [ Thu Dec 15, 2011 6:07 pm ] |
| Post subject: | |
I reckon its needle and seat and not seating properly. I had this problem with my twins on my GT. I parked it facing down-hill and had full tanks of fuel, ended up filling my sump with petrol. |
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