Recent starting issues. Fuel problem?

Originally Posted by phunk

Nice find! Possibly wasn't submersible rated hose.

CJM Fuel Pump install kit time

Originally Posted by phunk

If you have a return fuel system on your turbo car, usually fuel pressure will not hold more than a few seconds after the pump is off. Aftermarket regulators are not designed to hold pressure.

To crank from zero pressure rather then a primed system should only add an extra 2 cranks or so until it starts.

If the car starts hot, but doesnt start cold, (assuming plugs are good and nothing strange is going on) it is most likely an issue in the calibration. Getting a perfect tune that starts quickly in every circumstance can be harder than it sounds with many computer systems. In my Z, I used to have a random problem with hot starts that I never fully worked out in UpRev, but it would cold start E85 1000cc injectors dead middle of winter 0 degrees out like it was factory stock on a summer day. My mustang is tuned by one of the best tuners in the industry for that platform and it has intermittent issues with cold starting where sometimes it doesnt even start on the first cycle.

Its worth chasing it a bit, to make sure nothing is actually wrong physically with the fuel system or plugs etc. But if you get it nailed down to the ECU calibration, it may or may not be easily correctable.

Originally Posted by jax4557

I am sorry to butt in but maybe later this can help other people..



Phunk,

I am running the S1-E kit that is new with the stock hardline being used as return and also E85 and 1150cc injectors. I am having the issue of normal starts being fine especially on E85 but if I drive the car to operating temperature and then shut it off for a short period say to go inside a fast food joint or something ( more than 10 minutes but under 40 ) I am having a very hard time getting it to crank ( no priming, because I never expect this and think of trying to prime), sometimes it takes 8 cranks and once it starts it has low, terribly choppy idle for a minute or two and the first 30 seconds of driving I have terrible lag and no power almost as its trying to die but then it comes out of it and is fine. If it sits an hour or more it will always be fine with no starting issues... any ideas?

Originally Posted by Aviator44

That was my thought as well. I found a spot on the hose that does say "submersible" on it but not sure of its quality. Definitley a pretty tight bend for the line.

Your fuel pump install kit uses a metal u pipe to remedy this tight bend correct? Plan on ordering one from you tonight.

Originally Posted by Aviator44

That was my thought as well. I found a spot on the hose that does say "submersible" on it but not sure of its quality. Definitley a pretty tight bend for the line.

Your fuel pump install kit uses a metal u pipe to remedy this tight bend correct? Plan on ordering one from you tonight.

Originally Posted by redondoaveb

You've got a twin turbo sound system, I think you met your audio goals.

Originally Posted by Jayhovah

I'd imagine most of these systems come with it for a reason...

Originally Posted by phunk

If it said submersible, it was probably the right stuff them. I only know of one manufacturer who constructs it and prints it on the hose. Strange to see it fail! Perhaps it was compromised or defective or perhaps the tight bend?

Yes we use a metal U-Pipe to accomplish the 180 degrees, with 2 short lengths of submersible hose on either end.