Mole Posted September 17, 2002 Share Posted September 17, 2002 I've been reading some old threads that mention "bore wash". What is bore wash and can anyone tell me what causes it - various threads seem to suggest such things as over-rich mixture and detergents in Optimax! Someone enlighten me please SV 52 CAT - the Mole is flying Link to comment Share on other sites More sharing options...
Peter Carmichael Posted September 17, 2002 Share Posted September 17, 2002 If the mixture is massively over-rich, liquid fuel on the bore walls will wash away the lubricating film of oil at the piston rings and rapid wear of the rings and bore will result. Link to comment Share on other sites More sharing options...
Mole Posted September 17, 2002 Author Share Posted September 17, 2002 Thanks Peter - I knew I could rely on you ❗ Presumably then this is less likely on injection engines vs carburated? Do you have a view on the likely effect of detergents in fuels such as Optimax - it seems inconceivable that a major supplier like Shell could sell a fuel that would lead to increased engine wear SV 52 CAT - the Mole is flying Link to comment Share on other sites More sharing options...
Peter Carmichael Posted September 17, 2002 Share Posted September 17, 2002 All road fuels have a detergent package. Optimax is not unbelievably different to anything else. An injected engine with a bad sensor could be fuelled incorrectly enough to cause bore wash. Link to comment Share on other sites More sharing options...
Peter T Posted September 17, 2002 Share Posted September 17, 2002 It can also happen when you rev your engine prior to switching off, excess fuel is drawn into the cylinders as the engine slows, with no ignition on, no spark occurs and the fuel is not burnt! Really only applies to carbed motors. C7 PWT X-Flow all Steel Fuel Injected Iron Block Link to comment Share on other sites More sharing options...
Rob Walker Posted September 17, 2002 Share Posted September 17, 2002 Also sitting blipping the throttle with carbs is bad news, the throttle pump jets squirts neat fuel in which does no good if the engine is not under load. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now