No Power Under Load

chad_spindler

Recruit
Joined
Jun 28, 2011
Messages
2
I have a 1994 Mariah Talari 220 with a 5.7L Merc. When I try to plane off the engine seems to have no power and the boat struggles to get up on plane. Engine revs only peak at 2800RPM at full throttle. Once the boat is up on plane the boat works fine. Also after running for about an hour the engine sometimes backfires and sputters and when I come to a stop and try to go again the again sputters and backfires and almost stalls unless I pull back on the throttle. Anyone have any ideas on the problem I may have?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,491
Re: No Power Under Load

Ayuh,... You have a Fuel Delivery issue...
Start with checking, 'n changing the fuel Filters...
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,491
Re: No Power Under Load

my thoughts were fuel pump

Ayuh,... It could be Any of the system...
Start with the cheap/ free stuff...
Is the tank vent clear,..??
Is the tank's fittings givin' up her gas,..??
Are the lines clear,..??
Is there Crud in the filters,..??
The fuel pump, 'n carb are last on my list...

probably water, 'n crud in the fuel...
Which is Why ya start at the Filters...
 
Top