400ex not starting - Page 2

shadetree · 02-20-2010, 11:00 PM

true helmut..i just spray the starting fliud in thier real short burst..nothing heavy..just enough to tell me it's a carb prob or compression

Helmut · 02-20-2010, 11:35 PM

Quote:

Originally Posted by shadetree

true helmut..i just spray the starting fliud in thier real short burst..nothing heavy..just enough to tell me it's a carb prob or compression

Yeah, it probably wouldn't hurt it, unless you sprayed a whole lot in it. I'm just overly particular sometimes. LOL.

mud99 · 02-20-2010, 11:39 PM

I herd someone mention vapor lock by using ether any truth to that??

Helmut · 02-20-2010, 11:45 PM

Quote:

Originally Posted by mud99

I herd someone mention vapor lock by using ether any truth to that??

I've never heard of that before. Maybe they sprayed the cylinder full. I have seen automobiles lock up from too much gas in the cylinder. Gas compresses, but if the whole cylinder is full, it won't. It has to have a certain amount of air, before it can compress in the cylinder. Ether would probably work the same way. Maybe they sprayed to much ether into the cylinder or something.

mud99 · 02-20-2010, 11:52 PM

I had never heard of it either but thats what he said. It was on a motorcycle.

Helmut · 02-21-2010, 12:00 AM

Vapor lock really means that the gas gets hot and turns into a vapor in a fuel line and stops the fuel pump from pumping it properly. I don't see how he could have had vapor lock with ether unless he was trying to run straight ether in the bike. Maybe he meant something else by vapor lock and was just calling it that. I don't know.

shadetree · 02-21-2010, 02:29 AM

never heard of a vapor lock in a atv..i've worked on them for over 12 years..and never seen or had it happen to me..now.on a car..or truck..yeah..atv..motor cycle..no.

mud99 · 02-21-2010, 02:31 AM

Quote:

Originally Posted by shadetree

never heard of a vapor lock in a atv..i've worked on them for over 12 years..and never seen or had it happen to me..now.on a car..or truck..yeah..atv..motor cycle..no.

I was just repeating what the guy told me. I had never heard of it either. I would say he didnt know what he was talking about.

Billy250X · 02-21-2010, 08:03 AM

Yeah probably not.lol

Ucantbobmyknob · 02-21-2010, 06:55 PM

Quote:

Originally Posted by Helmut

Yeah, it could have jumped time. Check and see if it's firing at the plug. If it is, pour about a teaspoon of gas down the spark plug hole and put the plug back in and see if it will start. If it don't, there's a good possibility it jumped time or you have another problem inside the engine. Is this the one that had the gas mixed with oil put in it? If it is, make sure the plug is good. It may have fouled the plug.

No the one that had the gas oil mix in it was the other one that I have the big bore kit coming for. I put another plug in the wire and it sparks to the frame. I tried the gas in the plug hole and I got nothing. Timing seems like it could be the problem. I will do some research on how to time it. thanks!