So I'm FINALLY getting the last few loose ends tightened up on my current build before I trailer it to Synergy to get tuned.......and I have yet another lame issue. This time I believe it is electrical. Here is the what happened.

Car has ALWAYS started at the first crank. A couple days ago, it took up to a minute to get the car to start sputtering and finally fire. I drove it a little, drove fine considering it only hasa a shakey base tune.

Next day, car was a bitch to start once again. Took all kinds of time to get it sputtering. Finally starts, but died out of the blue a mile or so from my house as I was cruising about 40mph. Took some effort to start it. Drove it to my parents house a couple miles away. Was a bitch to start to drive it back home.......now it won't start and just cranks real good.

Fuel pressure is there but spark is not. Thought it might have been a bad crank senor......new one didn't help.

I switched to some used truck coils about 25 miles ago, so I'm going to try my stock ones out again even though my car seemed to miss at WOT in boost with those ones (thats why I switched). My mechanic is bringing them by my house later tonight, or tomarrow.

Could it be the cam sensor? Any other ideas? Its frustating because I'm soooooooo close to getting this thing tuned and I have had nothing but bad luck with this last damn build.

 

when my car suddenly had trouble starting it was because the rubber hoses from my new walbro pump had split open, this is actually pretty common, mabye worth looking into??

 

well he said he had fuel. i dont know about the coils, it would seem weird to lose more than one at once, unless its the connector/ wiring. cam sensor does seem logical but wouldnt that throw a code?

 

My fuel pressure seems to be okay. When I turn the key to "on", it hits 40ish psi real quick, then slowly bleeds down. When the car started this issue, but still would start eventually, it still had 42ish psi at idle. I can pull the bucket pretty easily because I have a trap door. Good lookin'.

Anyone? Anyone?

 

40 seems really low but I don't know what you set you're base fp at?

Mine is set at 62 so It hits 62 psi when I turn the key on & don't start it. It bleeds off fast but it hits the correct psi.

 

And my car idles ~ 56 psi (boost ref regulator)

 

Fuel pressure is way low as mentioned above. Mine is the same as code4

 

Check fuses as dumb as it sounds.

 

Mines at 43psi, as spec'd in the SD tune in HP Tuners. Running 60+psi of fuel pressure all the time, then +1psi per lb of boost is harder on the fuel pumps and isn't necessary. I doubt thats causing any issues with it just dying on him and not wanting to start.

Have you checked connections around the starter ninetres? Had a car die on me in the past and start inconsistently when the hot lead to the starter wasn't getting good connection. Might also check fuses and grounds if you know the coils are good and getting good connection. Good luck dude.

 

I had an issue with th scanner I tried yesterday. It saidI had no codes but there has to be tons of them with all of my unplugged sensors like my o2s, maf and such. I'm going to try a differnt one today.

The guy who let me use his scanner yesterday said that it showed no codes when the key was in the"on" position, yet both my service vehicle lights were on. Weird.

 

All good info guys. Thanks. Keep it coming so when I get off work I'll have all kinds of things to check

FWIW, I have a boost ref. FPR. I know it seems a tad low, but I would still think it would start. I pulled a plug and cranked it and it barely even lit. Like a dim oragne and it was irratic, no consistency. My friend that saw it said ti didn't even count as a spark lol

 

its probably something stupid..... did you check the battery/ alternator?

 

Car has all kinds of power.

 

I wonder if a bad/loose ground is at fault here?

 

That is one option still up in the air. The one on the back of the driver side head seem to be tight. I'll go over some more tonight.

 

one of the relays did that to my car a couple of times before

 

How do you test the relays? DOM and haynes manual? I always wanted to buy one for my car but neverbrought myself to drop the $20 on the book

 

That fuel pressure does seem low, mine is always at 60 at idle and then 1psi per 1lb of boost.

 

ninetres this JUST happened to my car.exact problem you stated.car threw no codes.take out the ignition relay and throw 1 of the fan relays in its place.sounds like the car will crank right up if you did it.

 

this is a quick test.. then go buy a new relay.