Question about 2003 Harley Davidson FXSTS Springer Softail

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88 cid hole behind rear cyl on block

Hello i got 02 softail with 88 cid an have small leak (oil) out of hole behind rear cyl down on engine block anyone have any info on that for repair i was told that it was a pry hole for splitting case halves true?? ive looked into it an cant get a good ansewer an is there seals back there??

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If I recall correctly the early TC's had a plug on the trans that was the problem as in your case which has since been done away with. Others said it is sweating . I don't think anyone really knows what the cause is.

Posted on Nov 20, 2008

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Gas is poring out the crankcase breather on my 88 softail


The crankcase breather on an 88 model is down low on the engine cases and exits underneath the bike. If you have fuel coming out of this breather, your crankcase is full of fuel due to a leak in the needle and seat of the carb. Your cylinders may be full of fuel as well.

First, turn the petcock off and stop the fuel leak. Then jack the bike up off the ground and shift the transmission into high gear. Remove both spark plugs. Turn the rear wheel by hand in it's normal direction of rotation and make sure the engine is not hydrostatically locked up due to the cylinder being full of gas. Once you know the engine is not locked up. Put the transmission back in neutral.

Now, if you spin the engine with the starter, it will pump the gasoline out of the crankcase. But, it will probably overflow the oil tank. I'd drain about two quarts of oil out of the tank and set it aside. Plug the oil drain hose and spin the engine with the starter for about 15 seconds with the spark plugs out of the engine. Wait three minutes and do it again. Then, drain the remaining oil out of the oil tank and pour the two quarts you initially drained out back into the tank. You're going to finish flushing the engine out with this oil. Spin the engine again with the starter, wait three minutes and do it again. Then, change the oil and the filter. This should get most of the gasoline out. Check your primary to see if the gasoline got into it as well.

Then fix the carb so that it doesn't overflow and remember to turn your petcock off when you get off your bike.

Good Luck
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Jun 04, 2011 | Harley Davidson FXST Softail Standard...

1 Answer

93 Fatboy oil leaking from vent tube at air filter. oil level is good, not over filled, oil will cover the oil tank on a 100 mile trip


On your '93 model, the crankcase vent is down low on the engine behind the oil pump and it runs up to the air filter through a metal and rubber hose. I don't know how many miles you have on your engine but it you're getting any blow-by on the rings, this will increase the pressure in the crankcase. Most people simply re-route the crankcase breather underneath the bike and plug the hole on the backside of the air filter. Replace the metal line with a rubber hose and put a small filter in the end of the hose. Route the hose back behind the transmission and attach it to the transmission mounting plate just in front of the rear wheel.

This was the way the older Shovelheads were done from the factory for years until the EPA made them start running the crankcase vented air through the engine. In 1994, Harley went to the "head breather" system and moved the crankcase vents to the heads. Still, the oil mist in the vented air builds up in the air cleaner on these models as well.

Good Luck
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Apr 12, 2011 | 1993 Harley Davidson FLSTF Fat boy

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Oil system manual for a 1987 softail (evolution). oil leaking from breather of engine system.


On your '87 Softail, the engine breather vent is behind and below the oil pump. The air from the breather is routed into the engine air filter by a metal pipe and rubber tubing that runs from the breather vent to the air filter. It is common to get a bit of oil in the air filter because of this system. The system was designed to meet EPA regulations of the time. Since then, the breather system has been modified to allow the engine to breathe at the top of the heads instead of down low on the engine. This resolves some of the problem with oil getting into the air filter but it still does not eliminate it. The only way to eliminate the oil from getting into the air filter is to reroute the air from the crankcase breather vent to somewhere else. Most people just let it exhaust underneath the bike by putting a small breather filter on the end of a short piece of rubber hose connected to the breather vent.

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Apr 01, 2011 | Harley Davidson FXST Softail Standard...

1 Answer

Can not find the oil drain plug on my 2005 softail I drained the trann fluid thanks for any help you can give me ROY


Look at the oil tank on your bike from the right side. At the bottom rear corner on the backside, you'll see a large diameter hose that comes out and goes down behind the transmission. Follow the hose all the way down behind the exhaust pipes and you'll see that it plugs onto a crossmember in the frame. Feel on the bottom side of this crossmember and you'll feel the drain plug. It screws into the crossmember from underneath it. Remove the plug and your oil tank drains. Refill with three quarts of 20W50 oil . Your transmission holds 20-24 ounces of oil.

Good Luck
Steve

Mar 19, 2011 | 2005 Harley Davidson FLSTC - FLSTCI...

1 Answer

Locating oil drain plug 2000 heitage softail?


Look at the oil tank from the right side down near the lower rear. You should see a hose going down behind the transmission. It goes on down to the lower tube on the frame behind the exhaust system. There is a metal plug in the line. Remove the plug to drain the oil.

The hose may run from the tank down to a crossmember of the frame where the shocks connect. If so, there is a plug screwed up from the bottom of the crossmember. I don't know what year they changed.

Good Luck
Steve

Oct 30, 2010 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

Where is the oil drain plug on the 88 c.i.H.D.2003


On all Softail models, look along the bottom of the oil tank from the right side of the bike. You'll see a line or hose going downward towards the transmission. Usually, unless the changed something, the line will come out along the frame down below and behind the transmission. There will be a plug in the end of the line. Remove the plug to drain the oil.

Good luck
Steve

Jul 21, 2010 | 2000 Harley Davidson FLSTS Heritage...

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