Mattew
New member
Hey all, I am here again with stupid wierd issue on my truck to share with you. 1991 2l-t is having bad times, its like every half year it goes nuts.
Short version if you are in hury
Reving over 2500 rpm it begin go crazy and lose power, sometimes produce thick blue smoke. Something is broken, that is sure...
Here is long version what is going on :keyboard:
Started today, driving in city everything was okay, then when cruising out of city about 90kph (56mph) it did not want go faster, feel like I was letting of throttle (which I did not obviously) or maybe misfire and boots pressure also change, jumping betwen 10-7 psi. Idk if this eratical pressure is issue or consequence, aka less fuel means less exhaust gases means lest turbo rpm... Increasing throttle did not have any effect at all so I let go of throttle and let it cruise at those 80kph (50mph) then it go okay, no 'misfire' behaviour. Steady rpm, speed, turbo pressure. Now to have it more interesting... Once I did little test. Leave it on fourth gear and went wot to see what would happen. It rev up to 2,5k rpm (little bit slower then normal I would say) and it went nuts again, rpm up and down, pressure too aaand it begin blow blue smoke! That is new :biggrin1: When I let off throttle it stop this crazy smoke, rpm dropped and all was fine again. Did one more time with same result. I am puzzled what is wrong this time :crazy: I am thinking of injection pump like it have issues with not able to deliver fuel at higher rpms AND it developed clicking sound over last 2-3 months (first only when cold, now all the time). Other then IP it could be turbo, but I am not sure if 3-4 psi pressure drop could lead to this loss of power, but bad turbo seal could produce blue smoke screen out of tailpipe :biggrin1: Oh and turbine have up/down, left/righ play about 2mm (grabing its end) which is waaaay more then it should be I guess
But why is not blow smoke all the time? Only during my wot test, weiiird haha.
Anyway, need take care of few things then I ll leave it to my mechanic to have look at it and see what is wrong. He could also take care of front bearing and rear shocks, both things I cant do on my own.
So here it goes, my broken diesel, again. Just to share with you how much 'fun' I have with my 4R. Feel like I should make my own thread about my almost always broken truck...
More thougths: After half day with friend Google, I suspect it is feed pump failure. Rotor have small metal thingies that could make that clicking / ticking sound and feed pump failure could result in not able to supply enought fuel at higher rpm. And for smoke? It could be white smoke after all (I watched road more, not cloud behind ) , white smoke from incomplete diesel combustion due to lack of fuel.
Hmm...
Short version if you are in hury
Reving over 2500 rpm it begin go crazy and lose power, sometimes produce thick blue smoke. Something is broken, that is sure...
Here is long version what is going on :keyboard:
Started today, driving in city everything was okay, then when cruising out of city about 90kph (56mph) it did not want go faster, feel like I was letting of throttle (which I did not obviously) or maybe misfire and boots pressure also change, jumping betwen 10-7 psi. Idk if this eratical pressure is issue or consequence, aka less fuel means less exhaust gases means lest turbo rpm... Increasing throttle did not have any effect at all so I let go of throttle and let it cruise at those 80kph (50mph) then it go okay, no 'misfire' behaviour. Steady rpm, speed, turbo pressure. Now to have it more interesting... Once I did little test. Leave it on fourth gear and went wot to see what would happen. It rev up to 2,5k rpm (little bit slower then normal I would say) and it went nuts again, rpm up and down, pressure too aaand it begin blow blue smoke! That is new :biggrin1: When I let off throttle it stop this crazy smoke, rpm dropped and all was fine again. Did one more time with same result. I am puzzled what is wrong this time :crazy: I am thinking of injection pump like it have issues with not able to deliver fuel at higher rpms AND it developed clicking sound over last 2-3 months (first only when cold, now all the time). Other then IP it could be turbo, but I am not sure if 3-4 psi pressure drop could lead to this loss of power, but bad turbo seal could produce blue smoke screen out of tailpipe :biggrin1: Oh and turbine have up/down, left/righ play about 2mm (grabing its end) which is waaaay more then it should be I guess
But why is not blow smoke all the time? Only during my wot test, weiiird haha.Anyway, need take care of few things then I ll leave it to my mechanic to have look at it and see what is wrong. He could also take care of front bearing and rear shocks, both things I cant do on my own.
So here it goes, my broken diesel, again. Just to share with you how much 'fun' I have with my 4R. Feel like I should make my own thread about my almost always broken truck...
More thougths: After half day with friend Google, I suspect it is feed pump failure. Rotor have small metal thingies that could make that clicking / ticking sound and feed pump failure could result in not able to supply enought fuel at higher rpm. And for smoke? It could be white smoke after all (I watched road more, not cloud behind
) , white smoke from incomplete diesel combustion due to lack of fuel. Hmm...
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