94' 300ex hard to start.
#11
94' 300ex hard to start.
I figured it should have been much higher. Im wondering if it's my head gasket or if it actually is blowing by the rings. There is no sign of blow by though. We have another four wheeler that has blow by and it spuders at high rpm. So I'm really not sure at this point.
Thanks for all the help so far.
Thanks for all the help so far.
#12
94' 300ex hard to start.
squirt a little oil in the cylinder and retest the compression,if it goes up, you have bad rings, the oil will help the rings seal for the test. If the compression does not go up, you either have a bad head gasket, as stated before, or your valves are so tight, they are slightly open, and leaking compression.
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#19
94' 300ex hard to start.
Yeah, Mine says the same. Maybe you don't need a top end overhaul. Maybe just a valve adjust?
Here's a cool link.
http://www.dansmc.com/MC_repaircourse.htm
Here's a cool link.
http://www.dansmc.com/MC_repaircourse.htm
#20
94' 300ex hard to start.
Hello hot rod...I am new to the atv world...never worked on them much, but I have overhauled and worked on many other mechanical modes of transportaions....like snowsleds...anyways....before I even read down to the other responses my first reaction was rings....low compression....if it starts hard cold that is a sign but also the valves like others suggested....but I would lean towards the compression or lack of because you said when it warms it will start better....that is the metal expanding and making it slightly tighter tolerances....it probally wouldnt hurt to do a ring job anyways of it has miles on it.....well just a thought....keep us posted.....Maine