Eat Red Snapper
Cadet
- Joined
- Jun 15, 2005
- Messages
- 6
I have read a lot of post and got some good ideas..But,,I have been grappling with this issue: 1989 50 hp Johnson: After warming up a little. Motor just bogs down like a fuel starvation problem, but i dont think it is that. I have had this problem for several seasons, this is what i have dont.
Carbs do not have high speed jets. I have put about 4 kits in. Carbs are clean. Fuel is clean. I took tank apart, flushed, cleaned pick up line, new filters. Replaced VRO ($$), changed gas lines, took choke/primer apart..replace membrane,seems fine. Last year I placed bulb vertical that seem to fix it, but still acting up. Compression check is 120 and 115 psi. Replaced water gasket, impellor, some lower end bushings, prop, when i got the boat several years ago. Motor is "peeing" strong, new plugs every season, test fire by placing plugs on block, turning over, fires looks strong, capictors on stator are hermatically sealed, looks brand new. A boat shop checked coil and charge, said it was strong and coils just go out -not a evolving failure. However, I saw a post where someone replaced the coils with a
similar problem and ran good afterwards.....
Can coils semi fail, or do they just peter out ?
I also saw a post where a guy activated his choke while bogging down and it ran better ?? I suspected my choke primer, but it clicks and is very clean inside, i did replace the membrane/gasket. Right now i disconnected oil from VRO, going manual mix, because i thought too much oil was gettin in causing a fouling, i thot this because oil was accumulating in the air silencer when motor is tilted for storing......Im thinking coils...Motor usually kicks right off, i have to let it idle and warm up @ 5 minutes , usually runs great, now it idles a little rough, takes a few more starts to idle,,,,,shop said coils were fine,,,but they are 1989 year......and only shop within 200 miles..... please through me your ideas !
Carbs do not have high speed jets. I have put about 4 kits in. Carbs are clean. Fuel is clean. I took tank apart, flushed, cleaned pick up line, new filters. Replaced VRO ($$), changed gas lines, took choke/primer apart..replace membrane,seems fine. Last year I placed bulb vertical that seem to fix it, but still acting up. Compression check is 120 and 115 psi. Replaced water gasket, impellor, some lower end bushings, prop, when i got the boat several years ago. Motor is "peeing" strong, new plugs every season, test fire by placing plugs on block, turning over, fires looks strong, capictors on stator are hermatically sealed, looks brand new. A boat shop checked coil and charge, said it was strong and coils just go out -not a evolving failure. However, I saw a post where someone replaced the coils with a
similar problem and ran good afterwards.....
Can coils semi fail, or do they just peter out ?
I also saw a post where a guy activated his choke while bogging down and it ran better ?? I suspected my choke primer, but it clicks and is very clean inside, i did replace the membrane/gasket. Right now i disconnected oil from VRO, going manual mix, because i thought too much oil was gettin in causing a fouling, i thot this because oil was accumulating in the air silencer when motor is tilted for storing......Im thinking coils...Motor usually kicks right off, i have to let it idle and warm up @ 5 minutes , usually runs great, now it idles a little rough, takes a few more starts to idle,,,,,shop said coils were fine,,,but they are 1989 year......and only shop within 200 miles..... please through me your ideas !