compression

[master chief]

To 12FOOTER,I checked the compression on my 200 OMC Seadrive.#1=120lb 3=115 5=105 2=105 4=100 6=100.Does this sound like a tired engine? I still don,t know if there is a problem @bottom of pick up tube in the fuel tank.The old engine still runs good,but won,t run @top speed.What you think?<br /> thanks,RLP

 

[12Footer]

Re: compression

Hi, MChief.<br /> It does sound like it's tired. It could be the whole problem. Weak compression will not operate the fuel pump the way it should. Also, it wont draw fuel into the engine due to loss of vac-key-yume (have to spell it like that,or it comes-out "vac****").<br />If you plan to rebuild her, now is the time.<br />You wouldn't want to wait till a ring snaps or something.<br />If not, you could probably solve the performance problem by installing an inline elctric fuel pump, but it won't be a perminant fix.