« previous next »
Pages: 1 [2]  All   Go Down

Author Topic: Been awhile / My #1 Cylinder keeps tapping spark plug  (Read 2501 times)

0 Members and 1 Guest are viewing this topic.

Offline JamesHeller

  • Full Member
  • *
  • Posts: 17
Re: Been awhile / My #1 Cylinder keeps tapping spark plug
« Reply #25 on: October 26, 2021, 11:05:43 PM »
Quote from: bryanj on October 20, 2021, 10:17:44 PM
Just to confirm it doesnt happen immediately and engine has to run for a while for it to happen?

Yes doesnt happen even when idle only during ride at about 50mph but two crushwashers did the job
Logged
78 Honda Cb750K

Offline JamesHeller

  • Full Member
  • *
  • Posts: 17
Re: Been awhile / My #1 Cylinder keeps tapping spark plug
« Reply #26 on: October 26, 2021, 11:07:17 PM »
Quote from: Phoenix on October 20, 2021, 08:18:18 AM
Stupid suggestion.  Use two crush washers.
it worked thanks for suggestion
Logged
78 Honda Cb750K

Offline JamesHeller

  • Full Member
  • *
  • Posts: 17
Re: Been awhile / My #1 Cylinder keeps tapping spark plug
« Reply #27 on: October 26, 2021, 11:09:13 PM »
Quote from: 2wheels on October 20, 2021, 10:43:55 AM
Is the motor very noisy (clanking) when running?
If it is.  Sounds like a connecting rod bearing is bad.

Did you do an oil change?  maybe lots of metal in the oil?
no motor clanking at all and no metal in oil
Logged
78 Honda Cb750K

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,995
  • CB500 Number 1000036
Re: Been awhile / My #1 Cylinder keeps tapping spark plug
« Reply #28 on: October 26, 2021, 11:47:52 PM »
If you are sure of both those then get another head
Logged
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!
Pages: 1 [2]  All   Go Up
« previous next »