Governor

It has been doing it since i have had it, 3yrs have yet to check the straner and the fuel filter.

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Originally Posted by clean32

the two big ones on the back of the pump, ( fire wall side). the big nuts are just covers, one is for idle speed the othere is Max RPM, i think the bottom one, cant remeber sorry.

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Originally Posted by rovercare

No, I believe governor adjustments are under the cap on the front of the pump, its just next to and slightly below the return pipe that goes to the fuel filter, although I may be corrected as I've never made a governor adjustment, just fuel, although i know under this cap, is a bolt with locknut, which I belive controls rack position (governor)

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Could be one of those too, Dave or John would be able to answer accurately:)

LOL i could be having a brain laps, off to dig out the book

I have a 80lt main tank and get less than 600km out of it

Sounds like a problem mine had at first, If you floor it in neutral does it actually hit 3200 RPM?, then, with a load surges at 2800 and wont pull.

No, only goes to 2800rpm with foot flat to the floor while out of gear

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Originally Posted by LRO

No, only goes to 2800rpm with foot flat to the floor while out of gear

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Some of the 4BD1's were set at 2800. But still should pull OK there under. Mines turboed and I find the best torque when heavy towing between 1200 and 2200. (And it really holds on) I have to down shift the LT 85 from fifth or the 4BD1T would strip fifth gear:eek:. I can peak it to 3200 but well out of it torque curve. In effect, I can go up hills faster in fifth gear.

i have to keep my foot flat to the floor to keep at 100km. when i hit a slight
hill its all over as the car will bog down very badly and i have to chang down

the screws with lock nuts on the top that the throttle arm hit set the idle speed and the maximum Governed RPMS.

the one that the arm rests on without any throttle applied is the Idle, I suggest setting this to about 800RPM to prolong the life of your gearbox input bearings. the other is your max RPMS I advise setting this for not more than 3800 RPM but the motor should be safe all the way to 4500RPM. (be warned if you go to this setting you have no overspeed safety margin)

when setting these I find its usually easier to set high and then wind them out to the desired setting before locking them off. Dont forget to use a light loctite or to paint the threads after.

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Originally Posted by Blknight.aus

but the motor should be safe all the way to 4500RPM. (be warned if you go to this setting you have no overspeed safety margin)

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Randy, the guy with the twin turbo 4BD1T in the old ford, has his revving out to about 5000rpm. Better for the 1/4 miles I think.
My JDM truck engine does 3,600rpm but my current tiny turbo means game over before 3000 comes around. The boost off idle is worth it.:cool: