Thread: I might just set my deefer on fire tonight...

I think mulgo sells an aluminium plate to give easier access to the pump in the load area floor, instead of dropping the entire tank to get to the pump.
Not 100% on surge causes, maybe the more experienced heads will comment?

I like the pink ones....
Have ya done the usual tests, like fuel pressure etc etc?
Was thinking wastegate solenoid, but Im not sure Deefers had that fitted.....?

the deefer is srtaight pressure operated no solenoid.. i havent tested the fuel pressure i dont have the equipment for that, might be well worth it though i think before i go burning $$$.. cheers

Any other signs like colour of exhaust?
Fuel filter changed? Sounds to me like fuel blockage or fuel pump.

little more exhaust than before but its just been chipped, it never blew any smoke prior to the chip... in fact it still doesnt really now, you only notice it at night with headlights pointed at your rear

it feels like a fuel blockage to me too, the car came from out west and was covered in red dirt, maybe just a blocked line i do run my tank below the last ten litres quite regularly..

i did a full service about 20,000 and changed the fuel filter ... it appeared to be the original filter.. with 200,000kms , ouch!

Looks like some sort of fuel restriction to me. Lets fuel through fast enough for motor to run but not to pull properly. Probably just need systematic checks to try and locate problem. Long ago I had baffling one with a 4 cyl petrol Series 2A. Was inclined to surge and not pull quite as well as it should at near top speed of 70 mph. Then I pulled off mechanical fuel lift pump and replaced diaphragm which sprung a leak. Afterwards, it would only get to about 40 mph before surging and would not go much faster.


Took me close to two frustrating days before I discovered the problem. Fuel line from lift pump to carby was plastic with short bits of steel tube with pipe fittings on them pressed into each end. Looks like when it was originally assembled, the steel tube on the fuel pump end had not been smoothed off before installation. When pushed in, it cut a flap of plastic. This for a long time just slightly restricted fuel flow from the maximum sometimes wanted. However, removing and replacing the end of the pipe from the lift pump disturbed this unwanted flap enough to make the restriction much worse.


Was easy enough to get rid of this flap and permanently cure the problem when it was diagnosed.


One of the most common types of fuel restriction /blockage I have come across is when there is a screen in the pickup pipe in the fuel tank. Can get blocked with crap. Often a quick temporary fix is to disconnect the pipe somewhere and blow back into the tank to get at least some off. To fix problem long term, need to clean tank out. Maybe not quite as simple on a TD5, which my knowledge of is limited. Think there is a lift pump in the fuel tank.

How does it run using only cruise control?

This will eliminate the possibility of a faulty TPS.