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Loss of power
- Thread starter Pdub
- Start date
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dblackstone
Well-Known Member
As in no change of RPMs when you add more throttle? could it be a broken cable off the throttle lever?
The wear ring is not the problem. It is engine related.
Is it firing on all 6? Need 6 spark testers to tell.
Check the insulation on the trigger where the wires come out from under the flywheel. Crumbling or good?
What is the compression on all 6? Need to check with fully charged battery at WOT. All spark plugs out.
Visual on the plugs while they are out. Black/oily or white/dry.
Do you have a throttle guardian in drivers helm box? Disconnect black with yellow stripe wire and test in the water again.
What is the battery voltage while running? The ECM does not do well on low voltage.
Check all the ground wires. There are art least 3.
When was the last time the fuel filters were changed? Strainer at bottom of pickup tube, screwed into lift pump, large spin-on.
I believe you have a newer style TPS. Have you checked its function? It controls air-fuel mixture to about 3/4 throttle. How much does it smoke as you advance the throttle? What is the fuel pressure- engine running and engine off. When you turn the key OFF, pressure should drop slowly.
Do you have water coming out of the pee hole? Should flow any time the engine is above idle.
Have you ever had ignition timing checked?
To check all that-- This is gonna hurt....
Another update and looking for feedback....mechanic hooked boat up to computer and was given a error code stating a bad map sensor...put a new one in...ran like a dream for 40 secs and died...computer gave the same error ...going to put another map sensor in tomorrow.
Mechanic says that if it fails again it could be a bad boat computer which would cost 2600 for just the unit.....
Anyone think of anyother issues causing this??
Or...might have a parts boat for sale!!
Mechanic says that if it fails again it could be a bad boat computer which would cost 2600 for just the unit.....
Anyone think of anyother issues causing this??
Or...might have a parts boat for sale!!
LikeabossTM
Active Member
I'd check/confirm the map sensor circuit (wiring) is good. And that the new sensor itself is actually bad already, if possible.
GILLES LUCI
New Member
Pdup .. i have the same problem on high speed .. so it was not the wear gear ? beside that the boat run great
ckleiman
Member
Following....any updates?
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