rogermarsha
Recruit
- Joined
- Jun 10, 2006
- Messages
- 3
Ok guys,
I need some serious advice here before I end up taking this motor to the scrap yard.
I have owned this 1996 Mariner 9.9 HP 4 Stroke for about two years and have been working on it almost constantly! All of the problems are hard or not starting. It has what is called a "fuel enrichener valve" or "electrothermal valve". This had to be the stupidest idea mercury ever came up with. Anyway, I have rebuilt the carb, replaced the electrothermal valve, plugs, checked compression, spark, fuel supply, taken the carb apart again to see it I had missed something last time.....3rd time today. All is good jets are clean fuel flows through all ports. A couple of months ago I found that there is one...i will call it a port...that actually had one way fuel flow that I found to be partially plugged, I got it cleaned up and put the carb in place and it ran and started well for several days in a row. I let it set for a week and I was still able to get it started but not so easily. After letting it set now for a couple of months, I went out today and could not get it to start. After a while I started putting my thumb over the intake and I could get it to start and run as long as I kept my thumb on the intake. Remove it...die! Even after the engine was warm it would still not stay running. Finally I pulled the enrichment valve again and checked it out, all looked good. Cleaned it anyway to no avail. Check wiring, Ohm's, all looked good. Finally I put the old enrichment valve back in , same thing. The only way I could get it to run was to pull the enrichener so that the needle was up about 3/8". And it ran perfectly. So I pulled it out completely and plugged the opening with my finger and it ran perfectly again. I expect this will cause cold starting problems since this motor has no manual choke. The only other thing I can think of is something wrong in the stator but it runs perfectly so who knows. I would like to know if I can just plug the hole for the enrichener valve and manufacture a manual choke for this thing or do I just take a BFH to it?
Any help appreciated.
Rog
I need some serious advice here before I end up taking this motor to the scrap yard.
I have owned this 1996 Mariner 9.9 HP 4 Stroke for about two years and have been working on it almost constantly! All of the problems are hard or not starting. It has what is called a "fuel enrichener valve" or "electrothermal valve". This had to be the stupidest idea mercury ever came up with. Anyway, I have rebuilt the carb, replaced the electrothermal valve, plugs, checked compression, spark, fuel supply, taken the carb apart again to see it I had missed something last time.....3rd time today. All is good jets are clean fuel flows through all ports. A couple of months ago I found that there is one...i will call it a port...that actually had one way fuel flow that I found to be partially plugged, I got it cleaned up and put the carb in place and it ran and started well for several days in a row. I let it set for a week and I was still able to get it started but not so easily. After letting it set now for a couple of months, I went out today and could not get it to start. After a while I started putting my thumb over the intake and I could get it to start and run as long as I kept my thumb on the intake. Remove it...die! Even after the engine was warm it would still not stay running. Finally I pulled the enrichment valve again and checked it out, all looked good. Cleaned it anyway to no avail. Check wiring, Ohm's, all looked good. Finally I put the old enrichment valve back in , same thing. The only way I could get it to run was to pull the enrichener so that the needle was up about 3/8". And it ran perfectly. So I pulled it out completely and plugged the opening with my finger and it ran perfectly again. I expect this will cause cold starting problems since this motor has no manual choke. The only other thing I can think of is something wrong in the stator but it runs perfectly so who knows. I would like to know if I can just plug the hole for the enrichener valve and manufacture a manual choke for this thing or do I just take a BFH to it?
Any help appreciated.
Rog