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Pingel installed - fuel blowing into airbox!
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dogeatshouse
Pingel installed - fuel blowing into airbox!
I just purchased a used 1980 GS750E. Got it running initially, but noticed fuel leak from petcock. Just finished installing Pingel replacement (after researching here), and now fuel foaming and overflowing out of airbox behind carbs! Any suggestions on where to start next? Dying to ride before it gets cold again this year.[-o<Tags: None
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I believe the Pingel petcock does not use vacuum to open the valve like the stock petcock. If you do not turn it off it is like the stock petcock being left in the 'prime' position. Eventually fuel will leak past the float seals and flood into the airbox. You may want to change your oil too since fuel may have gotten into the crankcase.
Thanks,
JoeIBA# 24077
'15 BMW R1200GS Adventure
'07 Triumph Tiger 1050 ABS
'08 Yamaha WR250R
"Krusty's inner circle is a completely unorganized group of grumpy individuals uninterested in niceties like factual information. Our main purpose, in an unorganized fashion, is to do little more than engage in anecdotal stories and idle chit-chat while providing little or no actual useful information. And, of course, ride a lot and have tons of fun.....in a Krusty manner."
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2005JJT
If you didn't have an issue with overflow before the petcock was installed it's in the wrong position and thats the problem. If it's not the petcock it's the float valves. Check that they are set to the right height. I hope it's the petcock.
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dogeatshouse
Originally posted by Joe NardyI believe the Pingel petcock does not use vacuum to open the valve like the stock petcock. If you do not turn it off it is like the stock petcock being left in the 'prime' position. Eventually fuel will leak past the float seals and flood into the airbox. You may want to change your oil too since fuel may have gotten into the crankcase.
Thanks,
Joe
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Originally posted by dogeatshouseI think fuel did get into the crankcase oil and I'll have to change it. You're right the pingel doesn't have a vacuum, but I sealed the line going from the back of the original petcock to the front of carbs (other line is fuel because it had the inline filter on it). There is another long line going from the back of the carbs but I assume this is for venting? So after I change the oil, double check the vacuum line plug, and then what? Replace float seals? (dreading taking the carbs off already).
JoeIBA# 24077
'15 BMW R1200GS Adventure
'07 Triumph Tiger 1050 ABS
'08 Yamaha WR250R
"Krusty's inner circle is a completely unorganized group of grumpy individuals uninterested in niceties like factual information. Our main purpose, in an unorganized fashion, is to do little more than engage in anecdotal stories and idle chit-chat while providing little or no actual useful information. And, of course, ride a lot and have tons of fun.....in a Krusty manner."
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dogeatshouse
Originally posted by 2005JJTIf you didn't have an issue with overflow before the petcock was installed it's in the wrong position and thats the problem. If it's not the petcock it's the float valves. Check that they are set to the right height. I hope it's the petcock.
(guy I bought it from, said it had just been serviced, cleaned and synched....)
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dogeatshouse
Originally posted by Joe NardyJust remember to turn the Pingel petcock off after every ride. Others on this site have had the identical problem. The stock petcock turns itself off when the engine isn't running. The vacuum line from the carbs opens the valve when vacuum is present. If you pull the fuel line off with the stock petcock and no vacuum applied no fuel will flow until vacuum is applied and opens the valve. With the Pingel fuel flows all the time. It will eventually get past the float seals.
Joe
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dogeatshouse
Originally posted by 2005JJTIf you didn't have an issue with overflow before the petcock was installed it's in the wrong position and thats the problem. If it's not the petcock it's the float valves. Check that they are set to the right height. I hope it's the petcock.
Starting to think I'm gonna have to learn carb rebuilding.
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Originally posted by dogeatshouseI turn the pingel off, read here about the carbs getting gunked up and even put a pinch off on the original petcock fuel line before I swapped it out. So after I change the oil, recharge the battery again (too much cranking), let the fuel drain out.... then I should try again tomorrow? If its gushing out again should I look into getting the carbs redone?
Does the fuel fill the airbox when the bike is sitting with the petcock turned off? If so, the petcock is defective. The only way fuel can get to the carbs (or anywhere else) is through the Pingel petcock. Turn the petcock to the off position. Disconnect the fuel line from the petcock (put something under it to catch the fuel). if fuel flows from the petcock it is defective.
If the problem happens when the bike is running and the petcock is turned to the on position the problem is probably a stuck float. Sometimes you can do a quick and dirty fix by tapping on the carb bodies. Otherwise you'll have to disassemble the carbs and clean or replace the float needles and seats.
JoeIBA# 24077
'15 BMW R1200GS Adventure
'07 Triumph Tiger 1050 ABS
'08 Yamaha WR250R
"Krusty's inner circle is a completely unorganized group of grumpy individuals uninterested in niceties like factual information. Our main purpose, in an unorganized fashion, is to do little more than engage in anecdotal stories and idle chit-chat while providing little or no actual useful information. And, of course, ride a lot and have tons of fun.....in a Krusty manner."
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You can probably determine which carb has the defective float. Turn the petcock on and let the bike sit for a while. Then open the screw on the bottom of each carb and drain the fuel out. Carefully measure the amount from each carb. If one carb had a lot more fuel than the others it is the one with the stuck float.
JoeIBA# 24077
'15 BMW R1200GS Adventure
'07 Triumph Tiger 1050 ABS
'08 Yamaha WR250R
"Krusty's inner circle is a completely unorganized group of grumpy individuals uninterested in niceties like factual information. Our main purpose, in an unorganized fashion, is to do little more than engage in anecdotal stories and idle chit-chat while providing little or no actual useful information. And, of course, ride a lot and have tons of fun.....in a Krusty manner."
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dogeatshouse
Originally posted by Joe NardyYou can probably determine which carb has the defective float. Turn the petcock on and let the bike sit for a while. Then open the screw on the bottom of each carb and drain the fuel out. Carefully measure the amount from each carb. If one carb had a lot more fuel than the others it is the one with the stuck float.
Joe
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Forum GuruCharter Member
GSResource Superstar
Past Site Supporter- Oct 2002
- 8858
- Angeles Forest, So.Calif./Red rocks of Southern Utah.
Your problem is a stuck/dirty float valve or a sticking float at one or more carbs.
Also, be sure the vacuum port at carb #2 is capped and the other two float bowl vent lines are clear/not kinked and run up behind the airbox area.And on the seventh day,after resting from all that he had done,God went for a ride on his GS!
Upon seeing that it was good, he went out again on his ZX14! But just a little bit faster!
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dogeatshouse
Originally posted by KEITH KRAUSEYour problem is a stuck/dirty float valve or a sticking float at one or more carbs.
Also, be sure the vacuum port at carb #2 is capped and the other two float bowl vent lines are clear/not kinked and run up behind the airbox area.
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Forum GuruCharter Member
GSResource Superstar
Past Site Supporter- Oct 2002
- 8858
- Angeles Forest, So.Calif./Red rocks of Southern Utah.
Originally posted by dogeatshouseThink I could get away with just using a couple cans of carb cleaner on them after taking them off? Or will they need a full disassembly - reassembly? I sent an email off to the person who had the o-rings but got no response from them
If you don't find any rust/dirt on the valves or their seats, you could have one or more float needle valves wearing out. This would mean the valve tips may be grooving or the spring loaded float pins getting weak.And on the seventh day,after resting from all that he had done,God went for a ride on his GS!
Upon seeing that it was good, he went out again on his ZX14! But just a little bit faster!
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