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Well i decided to check the valves at 18.5k this winter and check compression and what not. When i went to do a compression test cylinder 1 wont quite get to 150psi and cylinder 2 will get there after 9-10 cranks. Cylinders 3 and 4 will get to 175 (recomended by honda) in 3-5 cranks.
So i did a leak down test on cylinders 1 and 2 to find 30 % leakage. So i go ahead and check the valves to see if maybe one was tight and possibly holding a valve open. Nope. All valves where in spec ( usually are on these bikes). So i think i must have some bent valves. I can hear leakage on the intakes of 1 and 2 when i do leak down on them so i know its the intake valves.
Now what. I know the idiot before me must have beat the crap out of the bike. It still runs hard. I made 141hp when it was 60F and 137 hp when it was 85f outside. So i know it makes good power.
I also have a black smoke problem only under hard acceleration so theres a fuel enrichment problem with the map as well. It needs its own custom dyno tune for sure.
Any thoughts?
So i did a leak down test on cylinders 1 and 2 to find 30 % leakage. So i go ahead and check the valves to see if maybe one was tight and possibly holding a valve open. Nope. All valves where in spec ( usually are on these bikes). So i think i must have some bent valves. I can hear leakage on the intakes of 1 and 2 when i do leak down on them so i know its the intake valves.
Now what. I know the idiot before me must have beat the crap out of the bike. It still runs hard. I made 141hp when it was 60F and 137 hp when it was 85f outside. So i know it makes good power.
I also have a black smoke problem only under hard acceleration so theres a fuel enrichment problem with the map as well. It needs its own custom dyno tune for sure.
Any thoughts?