santiago

iTrader: (28)

what is this noise i can hear and what is causing it not to start up?
http://videos.streetfire.net/video/c...030011fdf7.htm

danf1000

iTrader: (2)

ok, what's all the symptoms, what's been done thusfar, what's been changed to possibly create this, what happened to get you here???

schthunk noise.....

santiago

iTrader: (28)

we basically did a 408 swap.
the tuner came to my house and put a tune on it.
before it was an ms3 cam only car

URLOSN

iTrader: (29)

If i had to guess, i would go out on a limb and check pushrod length. sounds like valves might be open and backfiring in the intake, just a guess

8a8mfh

iTrader: (3)

Cam timing off, possible bent valves, wrong pushrod length.

What was your piston to valve clearance? And how did you check it?
How did you check pushrod length?
These questions usually go unanswered/get ignored for a reason, hopefully for your sake you can answer them.

santiago

iTrader: (28)

its the same exact 408 as in my car and my car fired up.

we have -8cc pistons p to v isnt an issue

we have 7.35 pushrods as recommended from the the guys who spec'd this cam

98slowt/a

iTrader: (14)

maybe the coil packs are on the wrong sides
just going out on a limb

santiago

iTrader: (28)

ok weve learned there is no spark coming from the coil packs.

noah89

I ran into an ignition relay failure. $10.71 after 2 weeks of trying to figure it out.

santiago

iTrader: (28)

can you explain this

SLP Firehawk

iTrader: (9)

how can u have no spark when the car backfired? sounds like the timing is off due to backfire. did you do anything to the motor since the swap? its not likely the coil pack connectors got mixed up but you might want to check it anyway

santiago

iTrader: (28)

well we pulled the plugs and they still look brand new i pulled a plug wire and there is no spark comin out of the coil pack.

SLP Firehawk

iTrader: (9)

did you check multiple spark plug wires since they are coil on plug

98Camarod

iTrader: (43)

For the ignition relay problem, switch your fan#2 relay to where the ignition relay goes. If it fires then, then it's your ignition relay. I had mine go south when I left my battery connected while I ported my throttle body. When I went to start it up, I was pissed. I'd also check the grounds on the back of the head, well for that matter, check them all.

santiago

iTrader: (28)

i pulled a plug out and left it connected to the plug wire while he tried to start it and there is no visible spark

santiago

iTrader: (28)

there are 3 grounds on the back of the head correct 2 of them go bolted together and the other one separate....they are tight.

we swapped out the fan relay to the ignition...nothing

BayAreaSS

iTrader: (10)

This sucks. Good luck. I hope you guys get it worked out

ChevyChad

iTrader: (50)

Bet its the crank position sensor. Check it out- its by the starter. You may have to take the starter out to get to it...

santiago

iTrader: (28)

do you think its failed cuz i know its plugged in

Lt1Porsche

iTrader: (6)

The spark plug has to be grounded.If you just put a spark plug in the end of a wire and hold it in the air it will not fire at all. The spark plug is ground when it is tightened into the head. You need to either put the plug on a ground point or use a spark plug test to see if you actually have spark. By the sound of your motor. I would say that your timing is off or your pushrods are the wrong length. Hope this help a bit.