Outer Limits 4x4 Board

My brother has a 79 model flat tray with a 2H and 4spd. The problem is when driving the motor will just start reving for no apparent reason. Ive checked the return spring in the throttle and thats there and strong and the accelerator cable is free (not binding). Im putting it down to something wrong in the pump!
Any other ideas or can someone pinpoint the problem.

There is a diaphram in the back end of the pump. Check to see if its split or perished.
The fuel control relay &/or edic motor might be playing up. Moisture plays havoc with the fuel control relay circuit board.

what does it do at idle

i was driving a mates rig (not a yota) and it was over reving while driving and it was just shiat caught in the clutch from the mud pit. it eventually cleared after a few hard take offs and burn outs. just thought id see if it was a simple problem

Petrol in the fuel will also do this.

Sixty wrote:There is a diaphram in the back end of the pump. Check to see if its split or perished.
The fuel control relay &/or edic motor might be playing up. Moisture plays havoc with the fuel control relay circuit board.

this is most likely to be the cause. a small tear in the diaphragm is all it takes.

How bad is it revving?? I've seen somone overfill their oil after an oil change to the point where it started running on it's own engine oil .... the result ... lots of revs, lots of noise, 1 x rooted clutch (trying to stall it) and eventually a big BANG, lots of smoke, a very expensive repair bill and the usual egg on face!!

I guess as it hasn't gone BANG yet then it may not be the oil level but just in case check it to see if, when driving, it picks up a little sump oil and tries to run on it.

Cheers
Simo

Simo63 wrote:How bad is it revving?? I've seen somone overfill their oil after an oil change to the point where it started running on it's own engine oil .... the result ... lots of revs, lots of noise, 1 x rooted clutch (trying to stall it) and eventually a big BANG, lots of smoke, a very expensive repair bill and the usual egg on face!!

I guess as it hasn't gone BANG yet then it may not be the oil level but just in case check it to see if, when driving, it picks up a little sump oil and tries to run on it.

Cheers
Simo

heheh my bundera did that, it revved off the end of the tacho (6000rpm + I think) - it didn't blow up but it never did sound the same after that.

dumbdunce wrote:

Simo63 wrote:How bad is it revving?? I've seen somone overfill their oil after an oil change to the point where it started running on it's own engine oil .... the result ... lots of revs, lots of noise, 1 x rooted clutch (trying to stall it) and eventually a big BANG, lots of smoke, a very expensive repair bill and the usual egg on face!!

I guess as it hasn't gone BANG yet then it may not be the oil level but just in case check it to see if, when driving, it picks up a little sump oil and tries to run on it.

Cheers
Simo

heheh my bundera did that, it revved off the end of the tacho (6000rpm + I think) - it didn't blow up but it never did sound the same after that.

Only funny though cos it didn't explode ... how did you stop it from detonating??

Simo63 wrote:

dumbdunce wrote:

Simo63 wrote:How bad is it revving?? I've seen somone overfill their oil after an oil change to the point where it started running on it's own engine oil .... the result ... lots of revs, lots of noise, 1 x rooted clutch (trying to stall it) and eventually a big BANG, lots of smoke, a very expensive repair bill and the usual egg on face!!

I guess as it hasn't gone BANG yet then it may not be the oil level but just in case check it to see if, when driving, it picks up a little sump oil and tries to run on it.

Cheers
Simo

heheh my bundera did that, it revved off the end of the tacho (6000rpm + I think) - it didn't blow up but it never did sound the same after that.

Only funny though cos it didn't explode ... how did you stop it from detonating??

clutched it - it had a exedy Xtreme clutch so there was never any slippage.

Could have to much blowby & is running on its own oil.

Kyle

Not over full on oil, No blow by, and it will stop when you pull the kill button. Three people have said the diaphram ill try that and let you all know.