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I have a 1994 suzuki dt 140 that won't rev past 2500, both…

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I have a 1994...

I have a 1994 suzuki dt 140 that won't rev past 2500, both in neutral and in gear. Is it possible that the neutral limiter is contolling the rpm even when in gear and if so how can I check/bypass it to verify.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Is there anything else important you think the Marine Mechanic should know?

The boat has been sitting up for several years but I have cleaned the carbs, oil reservoir fuel filter etc. motor starts, idles and accelerates up to 2500 and then flattens out. If I bump the chock briefly it will try to accelerate for just a second until the extra gas burns.

Submitted: 5 months ago.Category: Boat
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Answered in 1 hour by:
3/11/2018
Marine Mechanic: Shane Creekmore, Marine Mechanic replied 5 months ago
Shane Creekmore
Shane Creekmore, Marine Mechanic
Category: Boat
Satisfied Customers: 314
Experience: I have over 20 years experience in the marine industry as a mechanic and powerhead tech at a major re-manufacturing company
Verified
It sounds like a bad fuel pump. Have you tried squeezing the primer bulb when it maxes out?
Also that motor may have safe mode. I can look it up when i get to the home.
If it is going into safe mode it is most likely your temp sensor that is bad (if you are not running hot) temp should be around 140-145
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Customer reply replied 5 months ago
on the primer bulb, no change. Also bypassed the fuel line ball connection and no difference. As to sensors, no indication on gauges, has warning signal and lights for rev, temp and low oil-no issues.
Marine Mechanic: Shane Creekmore, Marine Mechanic replied 5 months ago
I will opt out and see if anyone else is on. Suzuki's are not very common down here
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Customer reply replied 5 months ago
ThanksShane, not sure where down here is, I'm in central Fl. Hopefully someone else has experience with these old suzukis that used to be popular
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