Will heavy fuel cause a no start?

[preludeachris]

So Im trying to start my newly rebuilt motor and I just cannot get this thing started. It acts like it want to try to start but doesn't I Know I have spark. The only thing that comes to mind is fuel. The gas thats in the tank is about 11-12 months old. I added lucas fuel cleaner and 5 gallons of fresh new gas, I did a fuel gravity test and it still tests way on the heavy side. Is gas my issue or something else? I have a factory fuel pump (which DOES run) with 850cc injectors and MXTL wideband.

 

[gho5tone]

Have you check your grounds? I had issue like this the other day. Car cranks and all but wouldn't start. New ground and bam. Engine starts.

 

[greydelta38]

So Im trying to start my newly rebuilt motor and I just cannot get this thing started. It acts like it want to try to start but doesn't I Know I have spark. The only thing that comes to mind is fuel. The gas thats in the tank is about 11-12 months old. I added lucas fuel cleaner and 5 gallons of fresh new gas, I did a fuel gravity test and it still tests way on the heavy side. Is gas my issue or something else? I have a factory fuel pump (which DOES run) with 850cc injectors and MXTL wideband.

Make sure fuel is getting to the rail. Most likely after sitting there for a long time something clogged up.

EDIT: the filter loves to clog up on our cars, replace it.

 

[preludeachris]

Make sure fuel is getting to the rail. Most likely after sitting there for a long time something clogged up.

EDIT: the filter loves to clog up on our cars, replace it.

I already put in a new filter on it.

Have you check your grounds? I had issue like this the other day. Car cranks and all but wouldn't start. New ground and bam. Engine starts.

Can you elaborate? New ground??

 

[gho5tone]

Basically added another ground to the battery and replace old grounds.

 

[Rock2610d]

When I rebuilt my motor, after sitting for a long time I sent my injectors off to be cleaned and flow tested. To my suprise 2 of them had 0 flow and the other 2 only flowed 50%.

Sitting for long periods can make injectors not work. Take rail off with injectors and see if they are spraying a good pattern.

 

[preludeachris]

OK UPDATE;

I Now have the car running BUT its running VERY poorly feels like its missing....My problem was spark plug wires were switched around I thought the numbers on the coil packs ment which cylinder it went to ...I guess its not?

I dont know if its the new cams or what but its running REALLY rough tips would really help me out thanks!

ok heres a log of it at idle it seems to struggle to idle and thoughts?