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18 h/p 4 stroke nissan

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lowedaddy001

New member
I need the valve setting specs for an 18 h/p 4 stroke nissan. Also the timing mark allignment. I don't have a service manual.
I also have another question. What would cause a bent valve other than timing issues?
 
You want a Factory service manual, available at any dealer. Includes procedure for setting valves. The 15/18/20 should "never" get a bent valve. What is the compression, what is the leakdown percent in 5 minutes, how many hours on it, has it been maintained well, has the motor been de-carboned if many hours or too-rich running?

What makes you think you have a bent valve? Only way we confirm that on our shop is by pulling the head and inspecting it.
 
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