SOURCE: Bogging out
The TPS after installed must be adjusted and that is a delicate procedure so you better take it to a dealer's workshop.You should also check the fuel pump if it works properly.
SOURCE: Yamaha 115hp 2 stroke Outboard Boat Motor. Went
is it carbureted or fuel injected? are your warning horns working? if it iscarbureted then a few easy test can be done to find out. if its fuel injected then its a little harder but not impossible.(1) check compression. without the year model I'm giving you a average numbers. all cylinders need to be over 100 lbs and equal each other within 5 lbs.(2) check spark. use a spark gap tester all cylinders should jump a half inch gap. if you have good compression and good spark fuel is the problem nine times out of ten. clean fuel lines replace primer bulb and replace all fuel filters. Yamaha has a gravity filter under the engine coul. take it to the lake if no improvement. clean carbs. same test to be and fuel system service used of fuel injected engines. if no improvement in engine preformance then you will have to take it to a dealer to test with computer.
SOURCE: 330 Magnum bogs down.
NO! Check the boot between the carb and engine. Very common problem for aged rubber is non-visual cracks. Pull it off and check the boot by kneeding it and looking at it under a light.
SOURCE: 1998 Ford F-150 4.2 V6 starts and idles fine ibut bogs when step
i had a van do this same thing to a tee turned out to be a broken key pin in the harmonic balencer causing the timing to ****** replaced balencer and ran like a dream there is a crank sensor grid on the balencer when the key pin broke it trew the timing off
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