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| Engine rpms dropping http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=21934 |
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| Author: | justinla [ Sun Sep 11, 2011 7:59 am ] |
| Post subject: | Engine rpms dropping |
I have a Briggs 36hp PD, and while running full throttle (3850) the rpms will drop to 3600 then slowly recover and then drop again. If I pump my bulb it makes it run good for about 30 seconds. What should I do? |
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| Author: | deadbird8 [ Sun Sep 11, 2011 3:03 pm ] |
| Post subject: | Re: Engine rpms dropping |
Turn up your governor to 4200 OOW. Is it cutting out and then you pump the primer bulb and it keeps running? Starving for fuel would cut out the motor, not drop the RPM slowly. |
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| Author: | justinla [ Mon Sep 12, 2011 10:37 am ] |
| Post subject: | Re: Engine rpms dropping |
The rpms drop fast then recover slowly. If i pump bulb it recovers faster, and runs longer. |
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| Author: | BoatDR [ Mon Sep 12, 2011 10:40 am ] |
| Post subject: | Re: Engine rpms dropping |
If you keep squeezing the bulb does it bog down or maintain running? |
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| Author: | justinla [ Mon Sep 12, 2011 1:45 pm ] |
| Post subject: | Re: Engine rpms dropping |
if i continue squeezing it keeps running fine. |
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| Author: | cb5331 [ Mon Sep 12, 2011 2:16 pm ] |
| Post subject: | Re: Engine rpms dropping |
Probably have an air leak. That or your pump is bad, but more than likely just an air leak. |
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| Author: | BoatDR [ Mon Sep 12, 2011 7:34 pm ] |
| Post subject: | Re: Engine rpms dropping |
| Author: | justinla [ Mon Sep 12, 2011 8:57 pm ] |
| Post subject: | Re: Engine rpms dropping |
Thanks guys. I found one of my hose clamps really loose. I am hoping that's it. |
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| Author: | Kelly [ Thu Sep 15, 2011 1:33 pm ] |
| Post subject: | Re: Engine rpms dropping |
Mine is doing the EXACT same thing. Put a new bulb, hose, check and rechecked connections. Mines an 08 so I'm gonna try replacing the little mech pump. But its doing exactly what yours is, no airbubbles though. |
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| Author: | Kelly [ Thu Sep 15, 2011 1:34 pm ] |
| Post subject: | Re: Engine rpms dropping |
I may try going with the NAPA elect pump. |
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