[KillerB]

I'm asking for a freind, who just had his valves adjusted on his VTX and now it makes more noise. I've read some VTX owners forums and I keep hearing that this is normal after a valve adjustment. The problem is-the dealer has said there is something wrong with the decompression (somthing or other) and they will fix it for $1500. :scared Is more Valve noise normal on these or could there be more wrong? I found a download of a manual for this bike and the only thing I could find close to what the dealer may be talking about, it's in the fuel system called a "starter valve" and doesn't look like anthing that would cause this noise. :scratchea

Any advice would be helpful and appreciated.

KillerB

 

[ZXWUT?]

Get them to give you an actual estimate, detailing parts needed and why. I can't see 1500 bucks in the whole head.

 

[KevinD]

Several of the Japanese big V-Twins use a "decomp" (decompression) set up to aid in starting. On my Suzuki, there's a solenoid that pulls a cable that slightly opens the exhaust valves via a cam to accomplish this. I suppose something could be messed up with the cam on the end of the cable that would cause a noise.

KevinD

 

[bubba_zenetti]

part of the reason it is $1500 is the labor to remove the motor from the bike. if i am not mistaken, it is not possible to remove the heads from the vtx1800 unless the motor is pulled from the bike. the vtx 1800 has small windows to check valves but the cams will require removal to repair the automatic decompression release. the cam covers wont make it past the frame to remove them.

im willing to bet there is at least a good solid 12 hours of labor involved in that job. $1500 sounds cheap if you ask me. most shops are giving away work these days just to stay open.

 

[bubba_zenetti]

oh and BTW, it is unlikely that part is failed. my guess is the tech adjusted the valves on the exhaust side while the decompression release was loading the exhaust valve (it works by lifting the exhuast valve slightly during cranking) that mistake will leave you with quite the large gap between the rocker and cam lobe.

just check into that first before assuming the auto decomp is fuxored. also make sure the bike is has the correct idle speed set. anything below normal will make those things smack the cam early as it thinks it is cranking over the motor.

 

[KillerB]

Thank you for the responses. I will pass on the info. We did discuss the removal of the engine issue if the heads needed to be removed, and from what I understand they lay the frame over the engine to intall at the factory.

I hate to say it, but I'm glad it's not mine. I freaked at the thought of a $300 fuel pump on my old FZR.

All your input is appreciated!:thumblef:

 

[bubba_zenetti]

yeah most bikes are easier to build if ou lay the engine on the side and put the frame on over it. i had to do that on an engine swap for a st1300. there is no way you are lifitng it out of the frame on either of those bikes real easy like..........