Luciano Contreras Mr. Blittman 4B December 7th 2017 Troubleshooting What is trouble shooting? Trouble shooting is solving aserious problem for an organization or company. In engines it’s the sameconcept, what is it that’s causing the problem? For example an occurring problemfor engines is why isn’t it stating, and to trouble shoot you would figuringout what’s causing it and then fix it. Today I’m going to be talking aboutcompression and some things that could cause compression loss and how totrouble shoot it.Some topics I’m going to go over are Excessive carbonbuildup, if the Valve seat has popped out, if there’s Ring wear/cylinder wear, orif the Rings/cylinder have been scored, also if the Head gasket is blown.
Ifthere’s excessive carbon build up that means carbon is stuck on the valve seat orvalve face. To fix this “clean away the remaining carbon with solvent, usingfine steel wool to smooth rough spots. You can also soak metal parts for up to15 minutes to remove stubborn deposits. Scrape again, if necessary, to loosenstubborn grit. Then, clean the area thoroughly with the solvent and set thehead aside.” States Briggs and Stratton’s gas engines.
If the Valve seat has poppedout this means that the engine never get their fins cleaned which means excessheat makes aluminum expand too much. This happens on the intake seat. If theseat isn’t damaged by the valve, it can be re-seated into the block, but itsbetter that you take the engine in to a shop to have them do it.( I personally recommend27th street automotive down in Boise, I know a guy) They will re-cutthe seat and valve face as well. If there Ring wear/cylinder wear its due toyears of hard service. The opening get too wide, then compression is blown intothe crankcase.
If the cylinder is not too worn, Chrome Rings could be installedto re-gain your compression instead of over fitting and fitting the piston withsteel rings.