Mikey N.C.
Advanced Contributor
I've got a 2000 mercury 15 hp. Ot001953 15m, has wmc carb. with fuel pump on side . motor problem is it will run fine at shop on single muff, put in water with load , will take fuel sometimes then will not take fuel?
Compression is 120-120 , pulled carb. installed 18-5217 (can't remember)
Carb. was clean , now this carb has pulse tube at bottom, pump has the check plastic valve, between carb. body and outer cover with paper gasket then rubber diphram. The center plastic check valve portion are not serviceable with rebuild kit. Ok. Took motor on water today , she idles all day long, had idle screw 1 1/2 turns out from seat, she ran great for 2 miles, then backed down to ldle for 3-5 mins. then try to go to full throttle, and boggs down bring tiller to neutral, idles fine . I've installed the clear line from quick connect to filter an to pump on the side of carb. So no air. I had a shop tank with me , hooked it up samething. With cowling off obviously cause I was looking at clear lines for air, I could put 2 fingers over carb .
About 2-3 quick times and motor would take off full throttle and could run all day, but as soon as I came back to idle for 2-4 mins. then tried to accelerate she bogged, but as soon as I put fingers over carb. BOOM.
She took off. Ok sorry so long, I know it's not reeds, not compressions.
Is it block half seal or crankshaft seals? Or any opinions would be appreciated. THANKS.
Compression is 120-120 , pulled carb. installed 18-5217 (can't remember)
Carb. was clean , now this carb has pulse tube at bottom, pump has the check plastic valve, between carb. body and outer cover with paper gasket then rubber diphram. The center plastic check valve portion are not serviceable with rebuild kit. Ok. Took motor on water today , she idles all day long, had idle screw 1 1/2 turns out from seat, she ran great for 2 miles, then backed down to ldle for 3-5 mins. then try to go to full throttle, and boggs down bring tiller to neutral, idles fine . I've installed the clear line from quick connect to filter an to pump on the side of carb. So no air. I had a shop tank with me , hooked it up samething. With cowling off obviously cause I was looking at clear lines for air, I could put 2 fingers over carb .
About 2-3 quick times and motor would take off full throttle and could run all day, but as soon as I came back to idle for 2-4 mins. then tried to accelerate she bogged, but as soon as I put fingers over carb. BOOM.
She took off. Ok sorry so long, I know it's not reeds, not compressions.
Is it block half seal or crankshaft seals? Or any opinions would be appreciated. THANKS.