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Suspect a misfire...

Started by LtPwnzor, August 21, 2016, 08:03:21 AM

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LtPwnzor

August 21, 2016, 08:03:21 AM
So I'm back to my 92 FJ after over a year of being out of the country. I was riding the other day, and as I was pulling into the garage I could swear I heard a sort of "chuff-chuff" from my machine. She's also been very hard on gas, harder than I remember since my departure last Spring. I'm kind of worried.
Try not. Do, or do not; there is no try.

FJmonkey

#1
August 21, 2016, 08:49:59 AM
Sitting for long periods is bad for the carbs. Did you prep the bike before parking it?
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

Pat Conlon

#2
August 21, 2016, 10:10:12 AM
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

LtPwnzor

#3
August 21, 2016, 12:27:57 PM
The bike has been run regularly (no less than once every few weeks) since I've been gone. I had noticed this developing even before I'd left. During the weeks just before my departure, I had heard and felt it missing when the bike wasn't warm.
Try not. Do, or do not; there is no try.

FJmonkey

#4
August 21, 2016, 12:51:18 PM
Not a lot of information to help you with at this point. Start checking the easy stuff. Plugs, plug wires. Spray WD40 around the carb boots while under idle, possible vacuum leak.  :scratch_one-s_head:
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

Russfjr1

#5
October 21, 2016, 06:11:34 PM
Totally agree duff plugs or an air pipe of some description has rotted (old age) then given up all together. Change the plugs have a good look at all the rubber pipes should be good to go.  If not might be time to look at carbs?
It's about as useful as a chocolate fire guard
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