fuel in crank case, diagnose help?
Thread Starter
|
Road Master
Joined: Feb 2007
Posts: 860
Likes: 28
From: southbury connecticut
fuel in crank case, diagnose help?
hi.
1995 wideglide cv carb
went to take her for a ride for the first time in about 3 months. i checked the oil before i started like always and the case was full of gas mixed in the oil,
the pepcock was on ,i always leave it on, but i pulled the carb with the pepcock open no fuel comes out so the diaphram in the pepcock is good..
i pulled the carb then the carb bowl took out the float it is not cracked, i blew out the jets but the carb appears to be fine.
could the carb need a rebuild?
\
thanks
1995 wideglide cv carb
went to take her for a ride for the first time in about 3 months. i checked the oil before i started like always and the case was full of gas mixed in the oil,
the pepcock was on ,i always leave it on, but i pulled the carb with the pepcock open no fuel comes out so the diaphram in the pepcock is good..
i pulled the carb then the carb bowl took out the float it is not cracked, i blew out the jets but the carb appears to be fine.
could the carb need a rebuild?
\
thanks
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,528
Likes: 30,847
From: Pennsylvania
The petcock is there for a reason, use it to shut off the gas when you are not running the motorcycle.
May be a slow leak past the petcock diaphragm and your float not adjusted just right not shutting off the flow with the needle seat.
Pulling the carb may have loosened a stuck float.
Use the petcock shut-off for piece of mind.
May be a slow leak past the petcock diaphragm and your float not adjusted just right not shutting off the flow with the needle seat.
Pulling the carb may have loosened a stuck float.
Use the petcock shut-off for piece of mind.
Road Master
Joined: Mar 2012
Posts: 1,030
Likes: 988
From: Ohio
Define how much fuel is "full of fuel".
The carburetor only holds about a 1/2 a cup of fuel. If it was more than that, the petcock was letting fuel past.
The carburetor only holds about a 1/2 a cup of fuel. If it was more than that, the petcock was letting fuel past.
Last edited by Ohio HD; Aug 3, 2024 at 07:59 PM.
Thread Starter
|
Road Master
Joined: Feb 2007
Posts: 860
Likes: 28
From: southbury connecticut
carb off pepcock open no fuel comes out, maybe i will go back out to the garage and leave the pepcock open all night with a bucket under the hose and see if it leaks.
Grand HDF Member
Joined: Apr 2007
Posts: 3,727
Likes: 3,071
From: Brighton, MI
Your bike is 29 years old so if the following parts mentioned have not been replaced in the past couple of years, then do so!
Get a new non vacuum operated petcock and get in the habit of turning it off when you stop riding for any length of time. Replace fuel line from petcock to carb and replace vacuum line from carb to VOES if either of the hoses is more than a few years old. Don't forget the 3/16" bottom of the tank crossover fuel line (line that goes from one side of tank to the other).
Give the carb a good once over cleaning, replace the float needle. Make sure you get the correct (duplicate needle) float needle. Should be a 4 sided float needle. Get a OEM float needle if you can find, CV Performance if you can't. Consider new carb to manifold and intake seals just because of age. Could probably wait on the intake manifold seals till winter if not familiar with changing them. (do some homework on how to)
Clean the seat the float needle sits in. Use some polishing compound on a Q-tip to clean up the seat as it is not replaceable. Spin Q-tip with fingers and make sure it's shiny and clean. Use carb spray to clean the residual polishing compound. Check float height-this is tricky and there is a specific way of doing it.
https://cv-performance.com/carburetor-parts
Your bike will not sump oil into the crankcase because the oil tank is lower than the oil pump and oil pump check valve. So the amount of oil in your crankcase is minimal at best. Your oil is getting fuel diluted by either an overly rich condition or the float/needle is leaking fuel into the engine. Check your spark plugs for an overly rich condition and change your oil/filter to get the diluted fuel out.
Get a new non vacuum operated petcock and get in the habit of turning it off when you stop riding for any length of time. Replace fuel line from petcock to carb and replace vacuum line from carb to VOES if either of the hoses is more than a few years old. Don't forget the 3/16" bottom of the tank crossover fuel line (line that goes from one side of tank to the other).
Give the carb a good once over cleaning, replace the float needle. Make sure you get the correct (duplicate needle) float needle. Should be a 4 sided float needle. Get a OEM float needle if you can find, CV Performance if you can't. Consider new carb to manifold and intake seals just because of age. Could probably wait on the intake manifold seals till winter if not familiar with changing them. (do some homework on how to)
Clean the seat the float needle sits in. Use some polishing compound on a Q-tip to clean up the seat as it is not replaceable. Spin Q-tip with fingers and make sure it's shiny and clean. Use carb spray to clean the residual polishing compound. Check float height-this is tricky and there is a specific way of doing it.
https://cv-performance.com/carburetor-parts
Your bike will not sump oil into the crankcase because the oil tank is lower than the oil pump and oil pump check valve. So the amount of oil in your crankcase is minimal at best. Your oil is getting fuel diluted by either an overly rich condition or the float/needle is leaking fuel into the engine. Check your spark plugs for an overly rich condition and change your oil/filter to get the diluted fuel out.
Last edited by Yankee Dog; Aug 4, 2024 at 06:20 AM.
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,603
Likes: 3,374
From: Cental, MI
I guess My first question is...Who/Why check oil Before Starting??? RTFM
Then, I do Not see how anything could get into Oil Tank without bike Running.. Please explain How you check your Crankcase...
Good lesson to Use the Petcock!!! regardless
Then, I do Not see how anything could get into Oil Tank without bike Running.. Please explain How you check your Crankcase...
Good lesson to Use the Petcock!!! regardless
Last edited by Racepres; Aug 4, 2024 at 08:36 AM.
Trending Topics
HDF Community Team
Joined: Dec 2005
Posts: 5,421
Likes: 2,621
From: NC USA
seems like enough the dilute the oild to change the color and it drips off the stick looks thin and smells of gas.
carb off pepcock open no fuel comes out, maybe i will go back out to the garage and leave the pepcock open all night with a bucket under the hose and see if it leaks.
carb off pepcock open no fuel comes out, maybe i will go back out to the garage and leave the pepcock open all night with a bucket under the hose and see if it leaks.
Leaking thru the vacuum side over time will put it straight into the manifold past he rings into the crankcase. It's happened more a few times on newer bikes than that.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
Road Master
Joined: Feb 2007
Posts: 860
Likes: 28
From: southbury connecticut
thanks
Thread Starter
|
Road Master
Joined: Feb 2007
Posts: 860
Likes: 28
From: southbury connecticut
don't you check your oil?