After several years of sitting...
5 minute warm up/ whiteish smoke begins to puff from left pipe on rev, but not on idle. The smoke dissipates and smells like gas (93 octane with Lucas upper cylinder lube). I also noticed a puff of smoke coming from under the #1 header flange or Head (That area) during rev. No exhaust leak heard so I'm thinking cracked head, head bolt or gasket. I also notice oil around the header/mid pipe connection clamp. I've not riden this bike, only about 7-8 easy warm ups. There is a Occasional pop from the pipes during revs, but not often. Experience tells me thats a lean condition but you guys are welcome to say. I checked all plugs (New) during compression test and they all seem in equal condition, a little blackish. So, here is the dry compression result after a 5 minute warm up (NEW Harbor Freight gauge).
#1 #2 #3 #4
160 160 135 165
160 160 140 165
160 160 140 160
Second test, 5 minute cool down & fresh battery.
165 165 155 175
168 168 157 175
I'm considering cleaning the carbs but I've never done it. All I have to go on is what I find here on the forums.
Thanks guys
Forgot to tell you all, the service manual says
156-213 standard,
any thing below 128psi requires rebuild,
and any cylinder thats 28psi different requires rebuild.
5 minute warm up/ whiteish smoke begins to puff from left pipe on rev, but not on idle. The smoke dissipates and smells like gas (93 octane with Lucas upper cylinder lube). I also noticed a puff of smoke coming from under the #1 header flange or Head (That area) during rev. No exhaust leak heard so I'm thinking cracked head, head bolt or gasket. I also notice oil around the header/mid pipe connection clamp. I've not riden this bike, only about 7-8 easy warm ups. There is a Occasional pop from the pipes during revs, but not often. Experience tells me thats a lean condition but you guys are welcome to say. I checked all plugs (New) during compression test and they all seem in equal condition, a little blackish. So, here is the dry compression result after a 5 minute warm up (NEW Harbor Freight gauge).
#1 #2 #3 #4
160 160 135 165
160 160 140 165
160 160 140 160
Second test, 5 minute cool down & fresh battery.
165 165 155 175
168 168 157 175
I'm considering cleaning the carbs but I've never done it. All I have to go on is what I find here on the forums.
Thanks guys
Forgot to tell you all, the service manual says
156-213 standard,
any thing below 128psi requires rebuild,
and any cylinder thats 28psi different requires rebuild.
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