1987 Toyota Hilux 2.4 LT power and startup issues

[McLaren]

I have a 1987 Toyota Hilux 2.4 LTE 5 speed 4x4... turbo diesel with some interesting problems...

One... when it warms up and if I shut it off.... ( it won't start ) and I have to wait until 20 minutes or until it cools down.. if I put cold water or snow ( as I live in New England ) USA.... it will start up..

The motor is down in power... but when cold runs hard and strong...

Also.... all the vacuum lines that go to the intake... can they be plugged. Can I just connect the vacuum line from the alternator/vacuum directly to the back of the injection pump. The vacuum line that comes off the top of the injection pump to the high altitude compensator .. ( can that just be plugged too).. taking it all out of the loop.. I don't live in the Andes.. ( haha )... or does that have a major to do about giving the little beast power as well..

Would most appreciate anything anyone can do to help me out on this issue..

1: New Head
2: new turbo and waste gate
3: all timing is done on injection and tweaked a tiny bit
4: THANK YOU.....................

[tweake]

'87 is to early for a 2lte unless its a transplant.
need to know what injection system its running and whats been done to the emissions setup.
pics are helpful.

Also.... all the vacuum lines that go to the intake... can they be plugged. Can I just connect the vacuum line from the alternator/vacuum directly to the back of the injection pump. The vacuum line that comes off the top of the injection pump to the high altitude compensator .. ( can that just be plugged too).. taking it all out of the loop.. I don't live in the Andes.. ( haha )... or does that have a major to do about giving the little beast power as well..

they don't have high altitude compensator.
sounds like its a dogs breakfast, really need pics to see which motor you have and whats been done to it.

[McLaren]

2LT not E..

It's a 2.4 turbo diesel... 1987 model

[Crash bandicoot]

10 bucks says your vac pump is performing poorly.

check the line from the vacuum pump is free and clear. and then get a vac gauge on there to see what the pump itself is doing(back of alternator) guys in the UK having these issues too.

[tweake]

hows low vac going to stop starting?
afaik intake butterfly is open by default.

does it have the cold assist on the side of the injection pump?

i think there is a few different version of the emission systems on those. really needs pics to id what you have.

[McLaren]

It has a water coolant line connected to the injection pump...

Yes.... it is a 2.4 LT motor... no EGR valve... Brand new Alternator/vacuum pump combo

What is the vacuum pump suppose to read.. I am thinking -24 and when revved -27... what should it be?

Thanks...

Will get pics to you....

[McLaren]

I am thinking the butterfly stays closed as maybe the vacuum is hooked up wrong... thus the intake is not getting enough air to the turbo.... will check on that..

But still confused as to why it won't start unless it cools down or cold water or snow is put on the fuel injection pump... then starts????

[tweake]

depends on what setup its got.
if its got egr butterfly then it could be connected wrong and close the main butterfly when the egr turns on. but i would have thought it would stop the engine completely.

thats why i was asking if it had the cold asist on the side. if you adjusted timing with it in place it may be highly advanced when cold, which makes it go well when cold but way to advanced when hot.

the other thing is simply sucking air in through the pump seals. gap opens up when hot and sucks air in. ok while motors running but causes airlock when pump is stopped.

[slide]

Electric fuel cut-off solenoid playing up? Try use a manual wire to 12v+ to power it up, see if you can hear it click. Then try the same when you're having no-go when hot issues

[McLaren]

depends on what setup its got.
if its got egr butterfly then it could be connected wrong and close the main butterfly when the egr turns on. but i would have thought it would stop the engine completely.

thats why i was asking if it had the cold asist on the side. if you adjusted timing with it in place it may be highly advanced when cold, which makes it go well when cold but way to advanced when hot.

the other thing is simply sucking air in through the pump seals. gap opens up when hot and sucks air in. ok while motors running but causes airlock when pump is stopped.

It has no EGR... but has two vacuum lines that go into a disc of somesort on the intake side.. next to it is a small check valve and also connected to the closest to the firewall on the intake as well is a blue electrical connection...

I will get pics soon... but what is all this for since it is just a mechanical diesel.. is there a butterfly valve or something in the intake that is preventing power to be un-leashed? Also.... I think the fuel injection could be running to advanced and hot and getting some air bubbles, hence the cold water and or ice on top to get it to restart once warmed up... Will check the vacuum once again... THANKS for helping me with this issue!

[McLaren]

We found the problem... it was the vanes inside the fuel injection pump had a sheen on them... Even though the pump was rebuilt... that last step was over looked as we thought it was ok at the time....