Ok hopefully this is the last thread I have to make for help, but I really need to get this beast in good shape for work.. it's making no power and it struggles to get to highway speeds. The only way I can get to 65 is if it's a downhill slope or completely flat and it's hard to maintain that speed. The day I bought it I drove home going about 85. I've been doing A LOOOOOT of maintenance to this thing so I know it's from something I did.. but I just can't figure out what.. Going to work today I was driving up a very slight hill and I put the pedal to the floor and it doesn't change in RPM or speed at all, it's like an old Rabbit but probably a lot worse.. I went full throttle in 1st gear and could only make about 8 psi.. I unplugged the hose going to the wastegate and it started to act weird.. I made about 10 psi on a 1st gear pull and then cruising at 55 in 5th I was making 12 psi..?
What I've done in diagnosis
line inside ECM
line going to ECM
All lines from N75
I've ruled N75 out of being the problem as I replaced it temporarily with a manual boost controller (maxed out) and nothing changed.
The wastegate moves completely and freely - I applied pressure through the wastegate hose and watched the movement
The only engine codes I have are P1403, P1550, and P0380. I found a small boost leak in one of the silicone couplers which was audible, which I did a temp fix with duct tape and epoxy.
I'm really starting to think it's a fueling issue. I replaced the fuel filter very recently. My area of concern is when I did a head gasket change, I tried to clean the nozzles with a very fine wire brush.. I'm thinking that might have really screwed up the spray pattern. And I also sheared off the fuel return banjo bolt so to get me by I made a homemade banjo bolt.. I think what could be happening is the fuel isn't properly returning to the tank because of the banjo. Does anyone happen to know the bolt thread size?
Every time I start up there's a large puff of white smoke.. which I'm pretty sure is smoke from fuel.. Just one big puff and a little bit more if I give it fuel but as soon as I'm driving there's no smoke at all. My coolant reservoir level has been very solid for a while, as for my oil level.
It starts up almost instantly every time and idles great and I can hear the turbo spool loud and clear. It seems to run pretty well at lower speeds besides being incredibly slow. constant speeds above 50 seem to get pretty iffy
Hypothetically, if the fuel were to not return properly, wouldn't it then drain into the cylinders and then on startup all the fuel gets burnt up? and since the fuel isn't returning the injectors would have very little flow and then not give enough fuel hence why I have no power.
I'm debating on whether or not I should buy new nozzles due to possible damage from my "cleaning", but I will definitely buy a new banjo bolt if I can find the size..
What I've done in diagnosis
line inside ECM
line going to ECM
All lines from N75
I've ruled N75 out of being the problem as I replaced it temporarily with a manual boost controller (maxed out) and nothing changed.
The wastegate moves completely and freely - I applied pressure through the wastegate hose and watched the movement
The only engine codes I have are P1403, P1550, and P0380. I found a small boost leak in one of the silicone couplers which was audible, which I did a temp fix with duct tape and epoxy.
I'm really starting to think it's a fueling issue. I replaced the fuel filter very recently. My area of concern is when I did a head gasket change, I tried to clean the nozzles with a very fine wire brush.. I'm thinking that might have really screwed up the spray pattern. And I also sheared off the fuel return banjo bolt so to get me by I made a homemade banjo bolt.. I think what could be happening is the fuel isn't properly returning to the tank because of the banjo. Does anyone happen to know the bolt thread size?
Every time I start up there's a large puff of white smoke.. which I'm pretty sure is smoke from fuel.. Just one big puff and a little bit more if I give it fuel but as soon as I'm driving there's no smoke at all. My coolant reservoir level has been very solid for a while, as for my oil level.
It starts up almost instantly every time and idles great and I can hear the turbo spool loud and clear. It seems to run pretty well at lower speeds besides being incredibly slow. constant speeds above 50 seem to get pretty iffy
Hypothetically, if the fuel were to not return properly, wouldn't it then drain into the cylinders and then on startup all the fuel gets burnt up? and since the fuel isn't returning the injectors would have very little flow and then not give enough fuel hence why I have no power.
I'm debating on whether or not I should buy new nozzles due to possible damage from my "cleaning", but I will definitely buy a new banjo bolt if I can find the size..
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