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Go Back   FZ1OA Message Board > FZ1 & Fazer Owners Association > FZ1 Problems & Issues > Gen 1 Problems & Issues

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Old 07-11-2019, 05:14 AM   #21
reubswinks
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Quote:
Originally Posted by oldjeep View Post
Well, isn't this fun. Put it all back together and it is behaving in the exact same way. #4 header is cool at idle and the other 3 are hot. Also have a neat little pop when I let off the throttle after revving it.

Things that were done
1) Removed AIS
2) removed carb cooling hoses
3) complete carb refit (jets, O-rings, pilot screw, needle and seat, rods
4) swapped the 1/4 coil with another one

Still need to road test it and see if it rides decent. And I did get an adapter for my compression tester so I can do that later when it cools down.

Ugg
Seems like you are on the right track. Only thing left is compression. Might find out that your valves need some shimming maybe. Might be worth changing that plug anyways, even though it doesn't have many miles on it. Are they oem plugs? Also I imagine when you had the carbs off you would have seen if somehow you had something sitting in the air-inlet boot to carb 4, but if you didn't look, might give that a check also.
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Old 07-11-2019, 05:21 AM   #22
oldjeep
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Originally Posted by reubswinks View Post
Seems like you are on the right track. Only thing left is compression. Might find out that your valves need some shimming maybe. Might be worth changing that plug anyways, even though it doesn't have many miles on it. Are they oem plugs? Also I imagine when you had the carbs off you would have seen if somehow you had something sitting in the air-inlet boot to carb 4, but if you didn't look, might give that a check also.
NGK plugs - oem spec
Checked the boots, even went so far as to vacuum them and the airbox to make sure that somehow there was not a mouse nest.

Drove it last night - about 40 miles and it seems to operate fine - as it did before. #4 header is still way cooler. Still need to do the compression test

Also need to order a carb sync tool - just because
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Last edited by oldjeep; 07-11-2019 at 06:26 AM.
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Old 07-17-2019, 06:23 PM   #23
Wizbyu
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Late to the party , but when you say a little pop when you let off after revving it , is the pop coming from the exhaust or dose it sound like from the air box, you could have a bad valve, and that would be why you have a bad plug and cool pipe.
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