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Bashan 250 rr leaking oil from assuming the breather pipe and half q tank of petrol dripping out if the overflow?

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

wd4ity
  • 4565 Answers

SOURCE: 89 Harley FLTCU oil coming from the crankcase breather tube and

This is an age old problem for the Harley engine. In you 89 model, the crankcase breaths from behind the oil pump through a tube that runs to the backside of the air filter assembly. Most people that I know, simply remove the tube coming up to the air filter and block the hole in the air filter assembly backing plate. At the breather, they run a short hose to just behind the transmission and cut it off there. This is similar to the earlier Shovelhead engine and the way it breathes. In 1994, Harley went to the "head breather system" which was better but it still gets oil into the air filter assembly.

There is one thing I saw on the aftermarket assessories market once called a "CatchCan". The breather tube ran to it and it seperated the oil from the air and the held it in a small container to be emptied on a regular basis. I have never used one nor have I ever seen one so all I can tell you is what the book said. Matter of fact, I cannot remember where I saw it now. Custom Chorme catalog, maybe. Good Luck, Steve

Posted on Apr 30, 2010

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Oil pumping out of crank breather pipe oil smells of petrol also on my 1992 fzr 600


Hi, Raymond you may have carb overflow issues getting into the combustion chamber due to faulty float or needle and seat oil level readings are taken when the engine has reached normal operating temperature and the usual suspects are:
1. Overfilled oil tank dipstick reading should at or below full.
2. If the sight glass is full you are running to much oil.
3. Excessive blowby caused by worn out piston rings.
4. Piston rings never properly seated.
5. Faulty breather valve or system.
6. Pinched or clogged breather line/hose.
7. Clogged or failed oil filter.
8. Contaminated oil dirt-rust-water etc.
9. Excessive oil foaming.
10. Wrong oil type not designed for your bike.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a wonderful day.
Oil pumping from crankcase breather tube
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Yamaha FZR600 1989 1999 Workshop Service Manual Repair Download Manuals... $10 cheap
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Apr 24, 2017 | 1992 Yamaha FZR 600

1 Answer

There is a open ended pipe that runs above engine oil intake, the other end has a hose connected to it? mines leaking fluid thinking gas


Catch what is dripping and see if it smalls of gas, oil or water. Whatever it is I doubt it should not be open ended and should have a hose attached to it that goes somewhere.

Sounds a bit like an Oil Breather Pipe at that diameter.

Take a look at these.

Oil Breather Pipe Bing images

Jan 05, 2016 | 1997 Dodge Grand Caravan

1 Answer

I have 2 pipes one is at the back of the tank its pouring petrol out i thought it was just a breather


More likely a carb overflow pipe. (You should be able to track the pipe back to a carb to confirm this guess. If I'm right, you probably have a problem with the nedle valve in a carb sticking.

I would suggest: Remove carb, remove float chamber, take the pin out of the float himge, remove nedle valve, wash all in clean fuel, blow dry, reassemble.

Jun 30, 2011 | 1989 Yamaha TZR 250

1 Answer

Hi, I have a 1999 RS 250 Aprilia and it has a strange leaking problem. When you turn the fuel on, a minute or so later on the left hand side engine cover petrol leaks out. There is no sign of petrol...


Hi, Teedon and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
For more information about your issue please visit the websites below. Good luck and have nice a day.
DOWNLOAD 1999 Aprilia Rs 250

Oct 24, 2010 | 1999 Aprilia RS 250

1 Answer

Carbs


this is an oldie need carb rebuilding new needle seats and check the floats for leaks ( put them in water see if they sink.
do a thorough carb cleaning job on them and you need to check specs for float level setting.

Apr 27, 2010 | 1972 Honda CB 250

2 Answers

Breather pipe


one's a breather and one is petrol overflow (i think?) they will both go down to near the left foot and come out at the end with another pipe...the coolant overflow.

Dec 14, 2008 | 1995 Honda CBR 600 F(3)S

1 Answer

Oil leak


and with the V50 I thought I'd achieved my ambition. It was oiltight to begin with but not long after I'd done a bit of maintenance (oil and air filter change) I started noticing drips underneath - coming from the pipe that dangles from the air filter unit (yes it still has the original [expletive-deleted] item). For a while I ignored it as there were so many other jobs needing to be sorted, but it has just got worse. After a long trip, parking it is embarrassing - especially as everyone knows that Guzzis are oiltight . . . Now it seems to me that the oil could have come from one of three places - the crankcase, or either of the rocker boxes, as all of their breather pipes go to the underside of the air filter chamber. I therefore detached the existing pipes to the rockerboxes, stopped up their ends, and ran new breather pipes from the rockerboxes to vent under the bike. I reckoned that, with three pipes dangling underneath (Sherlock Holmes' three-pipe problem?), I should be able to see which part of the machine was responsible. With me so far? Did a 21-mile trip this morning, put it back up on its stand and waited. Result - oil drips from all three pipes! Thinks: when bought, the oil level was only just above minimum on the dipstick. When I changed the oil, I filled it to the max level - and someone has suggested that this is the cause of the problem. I therefore drained some oil out, and it's now at the half-way mark though without any effect on the oil drips. I'm reluctant to drain more, though that might be the next step. If it does effect a cure, would that point to some other, underlying problem? Any ideas or suggestions welcome, as at the moment this machine is not living up to the Guzzi reputation.,The breather system on the V50 works in a peculiar way. The two pipes from the rocker covers are the main engine breathers. They go into a chamber in the air filter housing, and the tube from there to the crankcase is actually a return pipe, to get the oil recovered from the breather back into the sump. On mine, I am sure the breather then goes into the air box behind the carbs, and I didn't think I had another pipe dangling down. Certainly too much oil in the sump can cause problems in most Guzzis.,,,

Nov 10, 2008 | 1984 Moto Guzzi V 50 III

1 Answer

Oil leak


and with the V50 I thought I'd achieved my ambition. It was oiltight to begin with but not long after I'd done a bit of maintenance (oil and air filter change) I started noticing drips underneath - coming from the pipe that dangles from the air filter unit (yes it still has the original [expletive-deleted] item). For a while I ignored it as there were so many other jobs needing to be sorted, but it has just got worse. After a long trip, parking it is embarrassing - especially as everyone knows that Guzzis are oiltight . . . Now it seems to me that the oil could have come from one of three places - the crankcase, or either of the rocker boxes, as all of their breather pipes go to the underside of the air filter chamber. I therefore detached the existing pipes to the rockerboxes, stopped up their ends, and ran new breather pipes from the rockerboxes to vent under the bike. I reckoned that, with three pipes dangling underneath (Sherlock Holmes' three-pipe problem?), I should be able to see which part of the machine was responsible. With me so far? Did a 21-mile trip this morning, put it back up on its stand and waited. Result - oil drips from all three pipes! Thinks: when bought, the oil level was only just above minimum on the dipstick. When I changed the oil, I filled it to the max level - and someone has suggested that this is the cause of the problem. I therefore drained some oil out, and it's now at the half-way mark though without any effect on the oil drips. I'm reluctant to drain more, though that might be the next step. If it does effect a cure, would that point to some other, underlying problem? Any ideas or suggestions welcome, as at the moment this machine is not living up to the Guzzi reputation.,The breather system on the V50 works in a peculiar way. The two pipes from the rocker covers are the main engine breathers. They go into a chamber in the air filter housing, and the tube from there to the crankcase is actually a return pipe, to get the oil recovered from the breather back into the sump. On mine, I am sure the breather then goes into the air box behind the carbs, and I didn't think I had another pipe dangling down. Certainly too much oil in the sump can cause problems in most Guzzis.,,,

Nov 10, 2008 | 1979 Moto Guzzi V 50 I

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