Hi All
My plugs seem to be oil fouling. Even after a long run they are have a black coating that is slightly oily. Bike starts a bit hard but runs great. I had a friend follow me for a few miles and he saw no white smoke even with hard acceleration and deceleration. I haven't done a compression test but it seems to be OK as on the compression stroke it will almost take my 200 some pounds on the kicker.
Bike is a 51FL with STD heads and about 2000 miles on the heads and a top end job. Bendix carb and Andrews #1 cam. Running the mid range Evo spark plugs.
What is a good diagnostic path here? Could I be running the wrong plug?
Thanks
King
Oil fouling
Forum rules
Please do not start new topics here, but here: New Panhead and Flathead topics
Please do not start new topics here, but here: New Panhead and Flathead topics
Re: Oil fouling
King,
I am/was having the same problem. Make sure that you're crankcase vent is not plugged. Mine was and I was burning oil and leaking oil at the cylinder bases. The oil pressure was just way too high. My plugs are the same you described and I have not changed them yet. The first time I did change them, my pan was first kick every time. My bike was also sluggish before I cleared the clog.
I am/was having the same problem. Make sure that you're crankcase vent is not plugged. Mine was and I was burning oil and leaking oil at the cylinder bases. The oil pressure was just way too high. My plugs are the same you described and I have not changed them yet. The first time I did change them, my pan was first kick every time. My bike was also sluggish before I cleared the clog.
-
- Inactive member
- Member
- Posts: 400
- Joined: Mon Jan 27, 2003 1:25 pm
- Bikes: *
- Been thanked: 4 times
Re: Oil fouling
Hi 63panhead
I need to check this out. I've noticed a bit less oil drainage from the primary case, so?? Where was your blockage?
Thanks
King
I need to check this out. I've noticed a bit less oil drainage from the primary case, so?? Where was your blockage?
Thanks
King
-
- Junior Member
- Posts: 8
- Joined: Mon Jul 25, 2005 2:45 am
- Bikes: 63 FLH
82 FLH
Re: Oil fouling
There was a seal installed on the inside of the breather shaft. I removed that. My chain oiler is turned off since I have a primary belt. Here's a link to my thread with pictures:
Leaking/burning oil
Leaking/burning oil
-
- Inactive member
- Member
- Posts: 400
- Joined: Mon Jan 27, 2003 1:25 pm
- Bikes: *
- Been thanked: 4 times
Re: Oil fouling
63panhead
Thanks for the thread reference. I doubt I have a similar problem as I've had the bike for over 30 years. But i just had some work done to install the new cam and possibly the breather gear got put back a tooth or two off. I noticed a bit of oil leaking out of the pan covers also. So i think I need to check the gear case.
King
Thanks for the thread reference. I doubt I have a similar problem as I've had the bike for over 30 years. But i just had some work done to install the new cam and possibly the breather gear got put back a tooth or two off. I noticed a bit of oil leaking out of the pan covers also. So i think I need to check the gear case.
King
-
- Inactive member
- Member
- Posts: 400
- Joined: Mon Jan 27, 2003 1:25 pm
- Bikes: *
- Been thanked: 4 times
Re: Oil fouling
Checked the breather and its chuffing away like an old steam engine, so definately not blocked. I guess I'll proceed to a compression test. Any other Ideas?
King
King
-
- Senior Member
- Posts: 6937
- Joined: Sun Feb 10, 2002 2:30 am
- Bikes: -
- Location: Central Illinois
- Has thanked: 112 times
- Been thanked: 310 times
Re: Oil fouling
To try to determine if the plugs are oil coated or gas sooted:
Put a gentle heatlamp on them for a while. If they dry to soot, then it's not oil. If it stays greasy, then it can only be oil.
Put a gentle heatlamp on them for a while. If they dry to soot, then it's not oil. If it stays greasy, then it can only be oil.