data log little red s10

**EagleMark** · 09-08-2013

That last log had almost no idle on the end in CL, looks like it stalled and was restarted... then finally went CL and you turned it off. So get a good idle data log and I'll see what I can do.

Starts hard as in? You want to call me?

**lilhupper** · 09-08-2013

it takes at least a minute to start. i forgot to do an idle log and shut it off then turned it back on

**EagleMark** · 09-09-2013

What's going on to take a minute to start? Cranking for a minute? Something is wrong? Should be about 5 cranks of motor without touching gas pedal.

Idle log has to be at end of a drive.

Could try and data log a cold start? That's a hard one to see what is happening but we could try. Tell me more. Is it flooding? Do you push on gas? To much timing like it's cranking hard?

**lilhupper** · 09-09-2013

i think i found the problem. the alternator is going out. battery died twice today. i have no lose connections. and the starting is like the battery is almost dead.

**EagleMark** · 09-09-2013

I can't tune that out!

Didin't we once see a low voltage when engine off? You may also have a weak battery which would cause the altenator to overwork. Have the batt load tested after a full charge.

**lilhupper** · 09-09-2013

better not be the battery its brand new

**lilhupper** · 09-13-2013

was a bad starter. but ive been thinking about taking the tbi off and going with some kind of MPFI. are there any system that are better? i know tune port is fairly cheap and easy to swap but i dont know much about it and im told its a waste of time? looking to make more power and get better fuel economy

**lilhupper** · 09-17-2013

i think it needs a 1/4 turn more.

**lilhupper** · 09-17-2013

I am also losing 2-3 psi of fuel pressure under a load not sure if that is something to be conserned about or not

**RobertISaar** · 09-17-2013

losing pressure when demand increases is either a pump that can't supply enough volume at the target pressure or a restriction somewhere along the way.

**lilhupper** · 09-17-2013

Well its the factory 2.5 l tbi pump i dont know if there any different from the 5.7 or not. Its got new an fuel line from the fiter up along with a new filter

**Fast355** · 09-18-2013

Originally Posted by lilhupper

Well its the factory 2.5 l tbi pump i dont know if there any different from the 5.7 or not. Its got new an fuel line from the fiter up along with a new filter

Yea, pull that sucker out and put a TPI F-car pump or 1992 CPI 4.3 pump in its place. I had a 1987 GMC Jimmy TBI 2.8 that kept falling on its face and found the fuel pump was only putting out 9 psi and the return line was dry.