News:

         
Welcome to FJowners.com


It is the members who make this best place for FJ related content on the internet.

Main Menu

Do these exhaust valves look bad or normal for 20k miles?

Started by 86FJNJ, September 28, 2024, 06:28:59 PM

Previous topic - Next topic

86FJNJ

Bike has almost 20k miles, took pipes off to do some service, how do these look compared to bikes mileage? I just got the bike so haven't ridden it yet not sure if it runs, but it does turn over.

Paul.1478

I just removed the exhaust from my bike a few days ago and looked at the same. It has 22K miles. It does not look like that. That seem to be very excessive to me.
2006 GL1800
2022 Ducati V2
1976 RD400
1993 FJ 1200 ABS

Pat Conlon

Does the VIN # on the frame match the VIN # on the engine?
Do the other 3 exhaust ports look like that...or just that one?
Odometers can be rolled back.
That is not typical carbon buildup on a 20k mile engine.
Don't freak out, I'm not saying that something is wrong, you won't know that until you start the engine, warm it up and get some compression readings.

Keep going, get her running.
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

86FJNJ

Number on engine matches. Haven't started bike yet but taking the oil pan off and valve cover off everything looked very clean. Should I just leave it as it or is there some kind of spray I can put on there to help break some of it loose once engine is running?

86FJNJ


Pat Conlon

1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

86FJNJ

Quote from: Pat Conlon on September 30, 2024, 05:40:29 PMDo the other 3 ports look like that?

yes they all look about the same. The reason they probably look wet is because the bike was sitting 15 years so I pulled the plugs and poured marvel mystery oil in the cylinders and left it for a few days then with the plugs out I cranked it over so it it pushed the oil out when I did that. But there still seems like a lot of carbon build up I would think since it's in all 4 it's likely because the bike was running really rich rather than all valve seals being bad. But I'm just guessing.

Pat Conlon

I wouldn't worry about it. Get the bike running. Do a compression test. The numbers will tell. Ride the bike for a couple hundred miles then add some Seafoam, see if that cleans things out. When you took out the old plugs, what did they look like?
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

chiz

For me I would try to dig some of that out of there with a shaped piece of Lignum Vitae and later on use marine Seafoam,