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Bad Backfiring after Valve Cover Gasket Replaced
- KZQ
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Sure! A properly adjusted cam chain could make that difference.Mac55 wrote: I had the cross wedge type, got it reset and everything is running well. Took it out for about 3 hours last night and so far no fresh oil on the engine which is better than I could say before.
One question I do have is could replacing that gasket affect performance? I've noticed a huge difference in how the engine feels when accelerating and I have a lot more pull in 4th and 5th than I did before. I don't understand how just messing with the valve cover could have affected performance that much though. I just did it because I suspected it was leaking oil. Any ideas?
Bill
www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
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- loudhvx
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If the timing was off by a tooth, and you re-timed it, then it will make a difference.
If the old valve cover gasket was torn and air was leaking into the air suction ports, that would cause the backfires, but won't affect performance. (It affects combustion in the exhaust system, not inside the cylinder.)
It could be you had some bad connection at the coils or other wires, and you disturbed them somehow.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- Mac55
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Also does anyone know where I can get more information on the '83 750 F1? I have the Clymer for all 80-83 KZ 750 twos and fours but as far as ive seen they don't even mention the F1 in the book despite it being an '83 four.
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- pete greek1
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Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!
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- 650ed
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99924-1035-03
99920-1183-01
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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