964521314413534
top of page
Search

Rocking No More


Called to an engine which wouldn't start and was hard to turn over on the starter.


After a few checks on the ignition and fuel system, we then run compression which was at 110psi.


We then removed the rocker cover to check valve backlash.

We found both rocker arms cracked and deformed.


Initial thought was that one or both valves were stuck fast on the valve seats.


However, the intake was only just opening and the exhaust wasn't moving at all (exhaust could be opened manually). The exhaust rocker had bent that far that the push rod had come out of the cam follower.


Not sure if this is material failure or incorrect valve backlash on both rockers?


Has anyone else ever had both rockers fail at the same time?


( Ignore the nut on the closet rocker, this photo was taken after disassembly )

5 views0 comments

Recent Posts

See All

Closed

Please note, we will be closed on the following dates- May 10th until May 14th 2023 You can still book in for a service, but no work will be carried out during this time.

Black Friday Sale Aboard 20% Discount

Ahoy There Boaters Calling all small outboard owners ( <20hp ) Our servicing this Black Friday Weekend comes with a huge 20% discount !! Perfect for a winter layup now the nights are closing in. For s

Kommentarer


Post: Blog2_Post
bottom of page