i have a 2003 speedster 160 with the 240 efi mercruiser v6.....boat has been running fine until my vacation this past week....the boat will idle fine but when i get up to speed trying to get on plane the boat will sputter out at 4000 rpm...i just changed all the spark plugs and it still does it ....any suggestions? is there a known issue with this on this motor?
speedster 160 mercruiser 240efi sputters at 4k rpm
Started by Luke, Aug 22 2011 12:18 PM
3 replies to this topic
Posted 22 August 2011 - 12:18 PM
Posted 23 August 2011 - 09:53 PM
Try changing both fuel filters. I had a similar issue once and changing the main fuel filter did not fix it. Only after changing both, including the smaller in-line fuel filter, did the problem go away. After that I have been using SEAFOAM fuel treatment and have not had the problem again since. Let us know if this helps.
Posted 26 August 2011 - 07:09 PM
when you say to change both fuel filters i pulled the tube inside the gas tank and there was nothing at the bottom...this is the only other place the schematic shows a fuel filter...the only other one is the in-line canister looking filter...i have not changed this one yet but plan to as soon as i get a day off...they say that there is one down the road from me at a merc dealer that i called earlier this week and they claimed not to have one...frustrating working or finding someone to work on this boat....everything around me is outboard and outboard only....anyways on the up side i have beef forced to learn the boat better than i ever thought i would....hopefully changing this works because the only thing next is to test fuel pressure then change the pump..i heard that it is not easy to get to....ill keep you posted
Posted 30 August 2011 - 09:41 PM
Ok changed fuel filter and still having issue....why? Lol this boat is driving me crazy!!
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