So there is a stainless steel filter crimped into the banjo bolt on the fuel line from the fuel filter to the injector pump. I just cleaned mine out. It was disgusting. How any fuel at all got through is beyond me. Great video and many helpful comments. good stuff.
I'm in the UK and my Isuzu NKR N77 3.0L Grafter 3.5T truck has the same 4JH1 engine and has been running with lack of power for ages - It uses the same MAF as this truck does - today I unplugged the MAF and test drove it - straight away I had my power back and no more black smoke from the exhaust. So Thank you for pointing me in the right direction. The Isuzu MAF is £200 so i ordered a generic Vauxhall/Opel/holden one off ALIEXPRESS for £15 - hopefully that will work the same and do a proper fix.
I have D’Max with the 4JK1 engine. It has intermittantly a lot of power and sometimes a little less. Will clean the MAF and might clean the EGR as well. Thanks for the video.
Mine is doing the exact same thing. Also I do need to replace injector as it has just started rough idle and blowing smoke when cold. But hopefully will save me 3k on a new vp44. Thanks mate.
My friend is having in array of problems with his 2002 diesel rodeo including lack of power then a host of elec issues such as turn signals not working, but hazards do, behaves like its in 4wd when its not, a lot of very glitchy things. I purchased a mechanics repair manual and when I look at the elec diagrams I can't see an ecm / ecu listed anywhere for the diesels. Do you know why this would be?
Thanks for filming this! Was great to watch how you actually diagnosed the problem. When you replaced the sensor did you probe it again? Just wondering how close it came to the desired graph..
You a legend Mate , got an issue with my ute 2006 diesel starts only on quick start and white smoke only when cold. When hot doesn't start must spray again quick start. Runs fine any advice Mate.
Thanks Buddy for taking the time to reply , its a rodeo diesel 2006 , 4jh1 motor. If You were in Adelaide I would have brought it too You. Only starts with quick start , I think I will change glow plugs. Its giving fault code p0380 and P0216. Maybe I will change glow plugs and injectors. Cause the pump is send fuel to injectors . Love Your work Mate
Hey mate Ive gone though and started to clean my intake and turbo piping, I've tried another Maf sensor to no avail, though I have noticed the blue wire on it is frayed... I'm not really sure what to do from here, do I just cover it up and continue with my clean. Or could this frayed wire have caused alot of my power problems, it feels as if the car is no different with or without the sender in. My brother also owns a jh1 rodeo and his has way more power from stock
@@a1mechanicaloakey639 it is a 05 ra rodeo, 3lt turbo diesel. I don't have an obd scanner. Though I've got severe power loss, starts fine, runs fine. Just no power. Replaced mafs to no avail, though the blue wire is exposed and slightly frayed, so I'm not sure if that would have an affect or not
You don't have wiring diagram, scanner or knowledge on how system works and how to test em. That's what I can gather. Apologies if I'm wrong. So in this case all i can give you is common issues with them. After that really need to see a good technician. Mass air flow sensor Blockage Filter net in banjo bolt in the inlet fuel pipe at the high pressure pump Change fuel filter. Clean tubing on the manifold/boost pressure sensor. Turbo control check. Vacuum line / diaphragm movement. Turbo turbine blade visual inspection. Blocked exhaust. Make sure throttle is wide open when revving. Have a physical look. Block EGR to eliminate any leakage into the intake. Any leak on intercooler or hoses after the turbo to the intake. Good luck mate As long as the frayed wire copper is intact and not touching each other, it should not be a problem
@@a1mechanicaloakey639 where would you recommend taking it in Brisbane, I'm near camp Hill Carina area. Cleaned the intake, intercooler, changed mafs. Checked connections, even installed a t tap to see if there is any issue... No change yet. I'm not sure where to locate the bango bolt on the pressure pump, about ready to give up. Leaning more towards fuel given the symptoms I've corrected, even when I'm going up a hill at 100 Kms it drops to 80, no black smoke or anything when I've held the pedal flat to the floor
Wow.very details explained. I work on heavy equipment i have this Isuzu 3.0 with 4JH1 turbo /intercooler having this same problem. lack of power when accelerating. i have a scan tool (Gscan2) the problem is I'm not sure what to look for from the live data.really appreciate your video here. I'll do same testing tomorrow and let u know.by the way. what scan tool you are using look very interesting. Thanks.
Couple of thinks to look for on 3.0 Isuzu is that they are not very powerful engine from the get go but I have seen MAF sensor go bad. Also there will be a banjo bolt with strainer filter inside on fuel inlet pipe at the fuel pump, they can be blocked too. I got AUTEL ultra scan tool. Thank you for your support.
@@a1mechanicaloakey639 thanks for the quick reply and will do some testing tomorrow. appreciate your help. Will let you know once i done with the diagnostic.Thanks
@@a1mechanicaloakey639 i have some details here for my Isuzu 3.0 dmax. with key on eng off. mass air flow sensor value (desire at 760mg)actual at (0mg) at idle speed (desire at 449mg) actual at (714mg) at 3109 rpm (desire at 597mg) actual at (614mg) it Seem like actual reading is always higher then desire reading.in your video desire reading is always higher than actual reading. I'm not sure if this reading is within spec. yes you was right. there is a filter screen inside the banjo plug. how to removed it. it looks like press in tight. appreciate your help. Thanks.
@@a1mechanicaloakey639 2007 and also i have this code P1651 fuel pump control module can bus (A) history P1625 Ecu holding voltage (A)history i can clear both codes.but each time i switched off the eng and restart again both codes will come back. I'm from malaysia.sorry for the delay to reply back.Thanks.
