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Showing results for tags 'backfiring'.
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Hey all, I work for a fleet shop and we have a lifeguard ATV its a Kawasaki brute force 650. Its back firing through one carb more than the other one and back firing through the exhaust. Starts up and idles good, once you start giving it throttle it acts as if its starving for fuel. This thing gets tons of beach sand thrown at it 24/7. Things that have been replaced are: both new carbs, new fuel pump, new plugs. Things that have been checked: Compression is good - in range (high end of the range) also have ohm'd the coils and the resistance is within spec in the service manual. Fuel pick up is clean, no debris or restriction there. Does any body have any other ideas what it could be? Thanks for any input
Hi everyone, I received a 98 Yamaha Timberwolf from my brother for free, and I'm working on getting it going. I am having the following problem: The engine is backfiring through the carb. I have done the following to try and get the four wheeler running: Rebuilt the carb and set the air screw to 1-1/4 turn out and the circlip at middle position 3 Replaced the coil, because the cable was loose at the coil end Repaired the main ground, coming from the battery Replaced the ignition switch, because my brother couldn't find the key. New switch tested good Tested the kill switch and it tested good New coil tested goodfor both primary and secondary coils Pickup coil resistance is at 195, which is correct My source coil, is where I believe the issue is. The resistance is 310ohms, and it should be between 428-523ohms When I opened the stator housing, there was significant oil, which I have read is normal. Does it sound like I'm on the right track replacing the source coil? Could this be causing my backfiring issue? It looks like the source coil is part of the stator assembly, is this correct? 4BD-85510-20-00 STATOR ASSY
It sounded like I was shooting a gun out the exhuast when I let off the throttle & popping thru the carbs. I thought I was going to be working on the carbs all day & then sync them so they work like they should. Well I thought I would richen them up a little first to see if that would work & there it was a missing vacum cap off of the intake where you hook up a sync tool easy fix for me and then about an hour test ride. The bad part is there may have been some foul play!