I absolutely can not get my car to run anymore. I used to just change he spk plugs and it would run fine. Now it only runs for a few seconds and when I pull the plugs out they are wet and black. I can't tell if it's the premix fuel or a bad oil seal internally.

I have tried so many things. I have tested the spark plug wires, ignition coils, pumped the fuel tank and replaced the gas without premix, downloaded dataligitsoftware and set a -0.4 lag, went off on an oil pressure and sensor tangent, tried adjusting the fuel map. I am broke and exhaused and have nothing to show for it

 

MAP sensor problem or vacuum leak

 

We have machined the primary rail to host 850 injectors. Even with machining the 850s dont sit deep enough. We test pumped the new set up and found the fuel spray was impeeded due to injectors not sitting deep enough. The fuel hits the sides just slightly on the way out, causing a dripping effect. We think this is going to cause idile issues and tuning difficulties during low revs and load. Should be ok when you put the hammer down.

We have decided to do the job right and get an after market fuel rail and suitable injectors, rather than **** about.

 

I think it comes in hand while using side feed injectors, because most people don't see issues. But people that are having hard times idling 850 primaries might want to do this so they don't have to force down the idle adjustment screw that much. I bet it is mostly effective with whatever injectors are closer to the stock primaries. Or the difference isn't really noticeable tuning with our senses, but one of those extra precautions use fore higher rpms and/ or boost levels.

 

Here is a link about that subject

I wrote this some time ago..

I´ve used and still use my calculation without problems..

If you need Help, let me know!