2.8 Hilux diesel problem

dont try to use any forms of thread sealers or tapes on the injector side of the pump or for that matter on the pump side of the filter....... it may come free and block an injector ... all those parts are metal to metal sealed and dont need any great force to seal either, over tight will warp it and leak..

I dont know if the Hilux has it in the pumps but try this...
The fuel injector pump will have a steel pipe that supplies the fuel pump with fuel it will/should be on the top of the pump, undo the BOLT that holds the end of the pipe to the pump and also acts as the delivery point to the pump, the bolt will be hollow, it should have 2 ali or copper washers on either side to seal the fuel in, dont lose them, remove the bolt and pipe, it may have a bracket else ware so dont force it, get a light and try to look down into the pump through this hole, down about 10-15mm you "may" find a S/Steel fine mesh filter, it will be shaped like a very small thimble, if it is there it will be blocked with very fine hairs and "stuff" from the pipe work from the filter to the pump, it is there to stop any bits that fail from the inside of the hoses and filter that are on the pump side of the filter...
It can be hard to get out but a fine steel "pick" is the best way, it will come out GENTLY so dont force it.... clean it and replace it back, dont leave it out......
Hope you find it and if blocked will solve ya problem

had similar issues a few years ago and it turned out to be sucking air through a pinhole in the rubber diaghram at the top of the fuel filter/primer pump assembly. it was the last thing i checked of course. if you take both inlet and outlet hoses off you can blow through them both to see if there's any leaks.

also check all fuel lines for holes and sucking air. you can do this by making a airtight seal around the filler pipe and pressurising weith compressed air with someone underneath looking for any fuel spraying out of the leak if there is one.

ity's likely that you have a combinatyion of problems and the leaky injector line was the final straw. the injector pump actually sucks uip way more fuel than is needed for most running (lots gets returned to the fuel tank via the smaller return fuel line) so if it is starving of fuel there's a reasonable chance that it signals a pretty serious air leak. at low revs it'll keep the fuel supply up but as soon as you open the throttle it can't becasue instead of sucking fuel into the pump it's sucking a bit of air.

if you follow the advice in the previous post be VERY GENTLE removing the nut and tube that enters the injector pump. mine broke when i removed it and it was a tricky solder job to fix it up. mine didn't have a mesh filter in it anyway so i wouldn't bother checking that until you've exhausted all other options.

air leaks can be hard to find so good luck.

Check your air inlet hose, Ill bet its colapsing under full power.From memory it should have a wire spring inside it but sometimes they get removed and the hose will suck in under power.Symptoms are as you describe.

Thanks for everyones help so far

Okay, worked fantastic for a week and has come back again.

Problem appears in any gear with full or close to full throttle under load mostly.

At about 3200 revs and above it starts to missfire? or runs rough, loses power and billows a blueish smoke, quite significant amounts!

bring the revs down and it runs fine. Then the next startup it takes a few more revs to start?

Does this sound like a fuel starvation problem/air leak.

Does the injector pump have a vaccuum advance?

Could it be an injector playing up?

Does anyone know a good\reputable diesel mechanic in Perth, northern suburbs preferably that you can recommend.

Thanks in Advance
Stu

take it here:->Belmont

Maîneÿ . . .

total fuel injection mc adam pl balcatta
ask for kim

hi just a thought
may be a bit off plastic in the fuel tank
that some times
making it starve
m

Hi All

Well so far so good.

Went and bought some replacement fuel hose/clamps and clear hose.

Replaced the old fuel hose with new fuel hose - result no change

Placed a length of clear hose before and after fuel filter and wow, heaps of large bubbles after fuel pump, minor little bubbles before pump.

Removed pump, bought new filter and orings and went to see Kim at total fuel injection.

He cleaned out fuel filter priming pump head/valve (plenty of crap in it), replaced filter/orings and sent me on my way without charge, great guy, great service.

Reinstalled with clear pipes and no more bubbles from the filter, minor ones before pump.

Replaced clamp on fuel line between rigid pump and flex hose near tank and all bubbles gone.

Test drive went great so fingers crossed problem solved.

Will give it some down the freeway to work next and see how it goes over 3000 rpm (not that it should go over that, but nice to know it works when you need it)

Thanks to everyone for their posts and referals esp trainslux and Stuart P.

Stu