start up help

[OLI19]

I have finished all the new mods, internals, blah blah and was ready for the big test. Checked timing and the #1 is TDC and the cam timing marks line up and the notch on the crank pulley are at 1T, but when i spin the motor (clockwise) 180 degrees it doesn't line the #3 TDC. Is my timing off?

Also, beefed up my injectors to 660cc and if i adjust my fuel pressure to stock i flood the cylinder. I seem to to better when the pressure is at 48-54. Any suggestions?

 

[awd95dsm]

What do you consider "stock" for fuel pressure? On a 2g dsm stock fuel pressure with the vacuum line connected should be 42 psi. As for the timing iv never checked at 180 degrees out I always just get it timed then rotate the engine a few times making sure that the timing matches up each 360 degrees. So I think you should be fine as long as it keeps matching up.

 

[OLI19]

I went over the timing and i am more confident that it is correct. Went back to the basics and saw that i should be using the NGK BPR7ES so I'm going to try them and maybe new coils. I have a gut feeling that my spark is too weak.
On the aeromotive fuel pressure regulator, i can change it to 42 and it drowns the cylinders out. i seem to have better luck at a higher psi like 50 b/c the injectors are like 2.5 times bigger then stock. not sure if that could be a problem too but ive heard of 850cc injectors on 4g63 before.

 

[miguelmcv]

Make sure your cooling sensor is working properly, If it is off, It will flood your cylinders right away, (will never start).
Also, If you have bigger injectors, Make sure you have set your Injectors, (Tune).
(BRING THE FUEL DOWN TO STOCK).

 

[awd95dsm]

I have a similar setup with 255 lph fuel pump 650 injectors and afc to tune it and mine runs fine off the stock fuel pressure. Not sure how increasing fuel pressure would cause it to flood the engine less. Is your wideband reading stoichometric? Also is the afc zeroed out until you can get it tuned?

 

[hoby0316]

Did the spark plugs or coils help at all. If the timing is correct there should not be a problem with starting it.