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Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through August 27, 2006

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Old    D. Cooper (dcooper)      Join Date: Mar 2005       08-14-2006, 12:34 PM Reply   
So, we have been having engine trouble, sometimes the engine gets bogged down when towing someone and slow to respond. Not consistenlty, the engines just seems under a bigger load sometimes than others. Nothing has changed, like weight or number of people.

The boat is 2001 Supra w/5.7 330hp indmar w/ 159hrs. Never done anything except oil changes and impeller change.

So is this a maintenance issue spark plugs, timing etc? Or do I have bigger or other problems?
Old    Nacho (denverd1)      Join Date: May 2004       08-14-2006, 1:20 PM Reply   
carbed?
Old    D. Cooper (dcooper)      Join Date: Mar 2005       08-14-2006, 1:48 PM Reply   
No injected "MPI"
Old    Rich (rich_g)      Join Date: May 2003       08-14-2006, 2:14 PM Reply   
replace the water/fuel separator; could be clogged and its an easy thing to eliminate as a possibility
Old    Trace (trace)      Join Date: Feb 2002       08-14-2006, 2:15 PM Reply   
If you haven't lately, change your fuel filter and check / clean the pickup screen.
Old    D. Cooper (dcooper)      Join Date: Mar 2005       08-14-2006, 2:21 PM Reply   
What is the pickup screen?

Is there a fuel filter and a water/fuel separator?
Old    Trace (trace)      Join Date: Feb 2002       08-14-2006, 2:35 PM Reply   
Not all boats have water separators, which usually look like big spin-on oil filters. The pickup screen is in the gas tank, on the end of the pickup tube.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       08-14-2006, 4:03 PM Reply   
Could have also just gotten some bad gas.
Old    D. Cooper (dcooper)      Join Date: Mar 2005       08-14-2006, 4:10 PM Reply   
So, at this point it should not need to have a "tune-up" so to speak? Just check the filter and maybe run the gas out...
Old    Trace (trace)      Join Date: Feb 2002       08-15-2006, 7:33 AM Reply   
Your description sounds like fuel starvation or maybe bad gas to me. A "tune-up" on an EFI motor doesn't encompass much, these days - change the fluids, fuel filter, and maybe the spark plugs.
Old    Nacho (denverd1)      Join Date: May 2004       08-15-2006, 8:58 AM Reply   
sounds like fuel filter: trace the line from the tank. look for a fuel/water separator too
Old     (fogey)      Join Date: Mar 2002       08-15-2006, 10:29 AM Reply   
The fuel/water separator is probably at the front of the engine (nearest the transom) on the port side. As someone said, it looks like a large spin-on oil filter. It's not too hard to access, but you may need an oil filter wrench to remove it.

I think it also serves as the fuel filter, as I have not found any other fuel filter on my Supra.
Old    D. Cooper (dcooper)      Join Date: Mar 2005       08-15-2006, 11:02 AM Reply   
Thanks, I'll check the fuel/water separator.

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