My 250 pro xs s#-1B962308, runs rough under 2000 rpm's and fine above that. As it sets in idle, the motor will spike in rpm's from 560 to 1000 rpm's. Has anyone experienced this, if so what was the cause?
Thank you,
EB
My 250 pro xs s#-1B962308, runs rough under 2000 rpm's and fine above that. As it sets in idle, the motor will spike in rpm's from 560 to 1000 rpm's. Has anyone experienced this, if so what was the cause?
Thank you,
EB
Yes. Bad TPS for me but it can be other things too.
USN Retired
2020 Basscat Caracal
2020 Mercury 225 ProXS 4s
Fuel and air pressure will need to be tested at the EXACT same time with two glycerin filled gauges.
+1... if no problems noted in pressures/leakdown, a Voltage Sweep Test of the TPS would be another item to check (while checking ALL of the Basics).
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thanks guys, I'll have her checked out and report back! TVOBBC
EB
hey 06 SB, Did you change it yourself? Is that a plug and play or does it need to be programmed? Cost?Originally Posted by 06 SB
Thx, EB
It could have been a DIY job (no programming required) but I was not sure what the issue was for sure. I ran it up to Don and he diagnosed it and fixed it.hey 06 SB, Did you change it yourself? Is that a plug and play or does it need to be programmed? Cost?
Thx, EB
USN Retired
2020 Basscat Caracal
2020 Mercury 225 ProXS 4s
Don't throw parts at it, get it checked out......
Finally got my problem check out, it was the Tracker Valve! FYI this will be the 3rd tracker valve according to motor history???
Thx guys,
EB
You might want to consider having the complete rails checked and cleaned, I would if I owned it and had replaced 3 in 6 years, I would also replace the spring and cover as well assuming they are available inividually
Last edited by lpugh; 12-13-2018 at 09:48 PM.
Thank You Leon Pugh
Not that I see... how many hours on the engine currently? (last I see was at 147)Finally got my problem check out, it was the Tracker Valve! FYI this will be the 3rd tracker valve according to motor history???
Thx guys,
EB
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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