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running problems

Started by badams, July 24, 2015, 11:44:44 AM

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FJ_Hooligan

I worked my butt off on a former member's FJ.  It would start but just didn't want to run well.  I went through the carbs several times and couldn't find anything.  I finally gave up.  A few days later he called me to say he replaced the plugs and it was running like a top!
DavidR.

badams

Thanks for all the input.

I broke off one of the kill switch wires putting it back together, arrrg! Another part coming off the parts bike. Completely dismantled switch and cleaned all the contacts. replaced the whole handlebar harness. no change

I did replace all the plugs with new. no change

Is he ignitor that square thing underneath the fairing? worth a try since I had to remove the fairing to replace the right handlebar harness.

I will need to get a timing light to check the timing.

Do yamaha dealers still have the ability to test IC box?

movenon

Fix the Run/stop switch wire :).

I think the FJ 1100 TCI box is located back by the battery?  It is in a potentially corrosive area for the connectors.

Timing light is handy to check timing and if nothing else to see if you have a spark signal.  Borrow one or check used tool places. I see them at yard sales occasionally.  Electronic ones are the best of the group. They are not in high demand anymore with the newer cars, lot of them sitting in tool box's.
George
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200

FJmonkey

Try Harbor Freight $19.99

http://www.harborfreight.com/xenon-timing-light-3343.html

HARBOR FREIGHT STORE
MINNEAPOLIS, MN #00137
725 45TH AVE NE
MINNEAPOLIS,MN 55421
763-571-9390

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

Bozo

Maybe I misread the previous replies so please don't kill me, has the cam timing been checked?. I am assuming it ran well prior to this problem.
First major bike in my life was a Mach III widow maker.
My Second permanent bike 1978 Z1R (owned since Dec 1977)
My Third permanent bike is the 89 FJ12 - nice and fast
Forth bike 89 FJ12 my totally standard workhorse
81 GPZ1100 hybrid - what a bike, built to sell but I can't part with it