1987 Toyota 2.4 turbo diesel Hilux pickup 4x4 5 speed manual ...NO POWER??????

[Bradford]

1987 Toyota 2.4 turbo diesel Hilux pickup 4x4 5 speed manual ...NO POWER??????

New head... rebuilt injector pump.... timed and a little enrichened... New turbo with waste gate.. all functioning properly... new alternator/vacuum pump... new fuel filter... fresh fuel... There is a significant loss of power up hills ... also when hot will not start as well...have to wait until it cools down... (not overheating)..anyone have any ideas on these vehicles?? Also what should the alternator/vacuum pump be at idle for negative pressure as well as at speed for PSI....need to find some one that would like to give me some pointers... THANKS!!

 

[GTSSportCoupe]

Did it run properly for a while after you did all that work, or has it had this problem ever since? Sounds injection pump related to me.

Try doing some searching and reading here: http://toyotasurf.asn.au/forum/ The folks on Ihmud have limited experience with the L engines, but that surf forum has a LOT of info.

 

[roscoFJ73]

Is making smoke , color? I also think its pump related. Who rebuilt the pump? The vacuum pump should always been in vacuum. The other toyota diesels are about 6psi or hertzogogs or whatever they measure vac in

 

[Bradford]

The Toyota smokes a little under throttle response... just cold water on fuel injection was the only way the Toyota would start and was told the injection pump was running to advanced and getting hot with air pockets, cold water would cool it off and thus it would start. Also it has constant vacuum... so that is good. What are all the vacuum lines and electrical connections on the manifold for.. and also the small one way check valve.. Do you have a company I can buy either used or new parts for this, also would like someone to describe what all these vacuum lines do and if they can be disconnected... It does not have an EGR valve..

 

[raevenzero]

Could be a fuel flow problem too. Restrictions can cause a lack of fuel and heat in the pump since fuel circulation keeps the pump cool. I had pre-filter issues once and the manual pump plunger would suck in when you revved the engine.

 

[Bradford]

What are all the vacuum lines on the upper manifold for and also the electrical solenoid with one way check valve connected do. I see a circular disc with one vacuum line in and out and that one line goes up to a check valve and then to an electrical vacuum connection too...

 

[roscoFJ73]

What are all the vacuum lines on the upper manifold for and also the electrical solenoid with one way check valve connected do. I see a circular disc with one vacuum line in and out and that one line goes up to a check valve and then to an electrical vacuum connection too...

Does your engine have a fast idle up gizmo? Thats what most of the vac lines do on other toyota diesels.

If your pump needs cold water on it to cool it down, it isnt going to last long. Rotary pumps have very fine tolerances around the plunger and pump head and excessive heating will cause expansion of the plunger , eventually causing it to lose compression.

What is the exact engine designation. 2LT or 2LTEII?
Take some pics of the vac lines .
Take pump to someone who knows rotary denso pumps and get them to set the timing if you cant do it.

 

[Bradford]

Does your engine have a fast idle up gizmo? Thats what most of the vac lines do on other toyota diesels.

If your pump needs cold water on it to cool it down, it isnt going to last long. Rotary pumps have very fine tolerances around the plunger and pump head and excessive heating will cause expansion of the plunger , eventually causing it to lose compression.

What is the exact engine designation. 2LT or 2LTEII?
Take some pics of the vac lines .
Take pump to someone who knows rotary denso pumps and get them to set the timing if you cant do it.

It a 2.4 LT turbo diesel motor... 87 vintage... Pump was just rebuilt and bench tested by a reputable diesel company in Bow NH It probably has not more than 500 miles on it as well... All started with a bad vacuum / alternator pump... now fixed... Motor all reconditioned with a new head and turbo...