2011 F300 compression standards

[99yam40]

Teachers always told us we would need all the things they were teaching us all way back then in school.
I guess they were right on some things

[TownsendsFJR1300]

Another method that works is find TDC (for the cylinder your working on) by cranking with the ole thumb over the spark plug hole until compression builds. If you can see the top of the piston, bring it (of course) to the highest position.

On other engines that you can't see the piston crown, same procedure BUT carefully put a thin bent rod I use a bent ((to fit correctly in the hole))aluminum, chain link fence tie). Once near TDC, watch the tie and get it as high as possible for TDC, then test.

On many OHV smaller engines (movers, generators, etc), when adjusting valves, the manufacturer (Honda for one) will want the piston NOT at TDC but 1/4" BEYOND TDC. In most of those engines, for the 1/4" , I'll simply put masking tape on a thin screw driver, find TDC and mark it. Then, another mark 1/4" past TDC and set the crankshaft there. Check and adjust valves..