Quote:
Originally Posted by Ike50701
Hello all, my problem is as follows, with a rundown of what Iv done thus far. My bike is a 2004 GZ250 with a little over 6k miles. When I went to start it this spring, it sprayed raw fuel out of the head gasket. I replaced the gasket torqued everything down per the manual, and it ran great. Then a wiring issue popped up, bad terminal on coil. Fixed that. Ran great for a while. Carb started acting funny, took it apart and cleaned it (was like new anyways) put it back on. Now the reason I did that is because the bike started backfiring on me. Now the backfire is even worse, to the point that the bike kills and will not restart for a little while. Last night I changed the oil bc like a dumbass I left the Petcock on prime and it dumped a cpl quarts of gas into the crankcase. I also put a new plug in it while I was @ it. Just got back from a test ride, roughly 3 miles, ran great till I got back home, backfired and killed as I pulled into the driveway. I'm at a loss, any ideas? I'm a car mechanic, bikes are a different animal to me.
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OK. You hydraulic'd gasoline. Just wow.
So:
1) you have an issue with your petcock
2) you have an issue with the carb. (even if it looks clean)
You caught the wiring problem. Good job
Carb acting funny and backfiring.....
I suggest you replace needle and seat in carb and reset float level.
I suggest you replace the exhaust gaskets.
Read up the service manual on torque settings and recheck the torque after
some use.
Also recheck the torque on all bolts involved in your new head gasket.
As if bike is new.
I'm thinking your carb is letting to much gas in and I'm thinking air is seeping in
your exhaust header at the head.
These ingredients lead to BANG!!!!!]
One last thing. Check valve adjustments.