1990 evo carb blows off intake
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Stage II
Joined: May 2012
Posts: 2
Likes: 0
From: Indiana
1990 evo carb blows off intake
My bike starts and runs fine until I turn it off. If it doesn't sit at least 5-10 minytes before I start it again it will backfire and blow the carb off. Once I put the carb back on it runs fine again.
Road Warrior
Joined: Mar 2007
Posts: 1,959
Likes: 2
From: Florida
I've had my carb blow out even with a good backplate and bolts. Not often, maybe 3 times in 8 years and then the one a couple months ago and the plastic around one of the backplate bolts broke and it fell out. Every time it backfires would point there.
Road Master
Joined: Apr 2007
Posts: 769
Likes: 3
From: Ohio
I had that problem once on my dresser, I replaced the intake manifold seals part # 26995-86A, something else is going on also, I would check the timing.
Last edited by oldwarrior; Jun 26, 2014 at 07:27 PM.
Road Warrior
Joined: Mar 2009
Posts: 1,885
Likes: 0
From: Chicago area
Keep here. A glitch to an EVO owner?
Many have done it.....not alone. Welcome to EVO
Last edited by oppirs; Jun 26, 2014 at 07:46 PM.
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Road Master
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Grand HDF Member
Joined: Apr 2007
Posts: 3,727
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From: Brighton, MI
Yes, one would think that if the backing plate is properly secured, the carb will not blow off, so need to check that.
Then next issue, why is it backfiring? Like mentioned, timing, jetting, leaky intake seals at the head...Good luck YD
Then next issue, why is it backfiring? Like mentioned, timing, jetting, leaky intake seals at the head...Good luck YD
Road Warrior
Joined: Oct 2011
Posts: 1,376
Likes: 36
From: Round Rock, TX
If the backing plate is messed up enough to allow the carb to blow off, the seal between the carb and the intake can't be very good. Could be the backfire problem right there. I'd secure the carb first.