sizemoremk
Registered User
Hey guys, I've just completed building a motor with 50lbers among other things, and am having a no start problem...
I had the eec-tuner hooked up with a baseline tne for my setup, but after no luck, I've removed it in hopes that it will start... It was previously in the car running fine just controling the fan on and off stuff.
Dave Neibert said his car "ran" with the 50s without the tuner... So I thought I'd try it that way...
Anywyas, I was wondering if anyone had any ideas???
I've got spark and fuel, spark verified by timing light on each plug wire; and fuel verified just under 40 by a fuel pressure guage.
I've pulled the codes and no problems; swapped, cleaned, swapped, and cleaned fouled plugs until I can do it in about a half hour; pulled the spout connector, put it back in, unhooked the MAF, sprayed plenty of starting fluid; check the harnesses and plug wires several times, swapped battaries and spare starters several times, and have only gotten it to start very sporadiaclly...
The couple of times it did start were probably flukes but it will only start or almost start when the maf is disconnected.
Sometimes if I go to part throttle when trying to start it would fire... Also seems like it might try to start a little more if I turn the key on and off a couple of time to get the fuel pressure compeltly built up... This leads me to wonder if one of the brand new 50lbers is leaking down. I did notice that the fuel pressure will drop a few pounds if I let it sit for an hour or so, but I don't know if this is normal or not...
I did use the cam sync tool when installing the cam sensor, and I am sure it was on the compression stroke when I set it.
I do not get the upshift light during cranking.
I did degree the cam when i installed it, and it is 1 degree retarded.
I do have a ground on both sides of the engine, and the ground from the motor mount to battery cable has an extra cable going to a good chasis ground as well.
Any ideas??
I have updated my member page to reflect the current state of mods...
I had the eec-tuner hooked up with a baseline tne for my setup, but after no luck, I've removed it in hopes that it will start... It was previously in the car running fine just controling the fan on and off stuff.
Dave Neibert said his car "ran" with the 50s without the tuner... So I thought I'd try it that way...
Anywyas, I was wondering if anyone had any ideas???
I've got spark and fuel, spark verified by timing light on each plug wire; and fuel verified just under 40 by a fuel pressure guage.
I've pulled the codes and no problems; swapped, cleaned, swapped, and cleaned fouled plugs until I can do it in about a half hour; pulled the spout connector, put it back in, unhooked the MAF, sprayed plenty of starting fluid; check the harnesses and plug wires several times, swapped battaries and spare starters several times, and have only gotten it to start very sporadiaclly...
The couple of times it did start were probably flukes but it will only start or almost start when the maf is disconnected.
Sometimes if I go to part throttle when trying to start it would fire... Also seems like it might try to start a little more if I turn the key on and off a couple of time to get the fuel pressure compeltly built up... This leads me to wonder if one of the brand new 50lbers is leaking down. I did notice that the fuel pressure will drop a few pounds if I let it sit for an hour or so, but I don't know if this is normal or not...
I did use the cam sync tool when installing the cam sensor, and I am sure it was on the compression stroke when I set it.
I do not get the upshift light during cranking.
I did degree the cam when i installed it, and it is 1 degree retarded.
I do have a ground on both sides of the engine, and the ground from the motor mount to battery cable has an extra cable going to a good chasis ground as well.
Any ideas??
I have updated my member page to reflect the current state of mods...
Last edited: