ok so its been awhile since i have been on here but recently bought another swapped 4th gen have a 96 max with vq35 swap has 3.0 timing componets stock 96 ecu 5spd ..my problem is sometimes car wont start just cranks and cranks if i hit it will a lil starting fluid she fires up and runs fine after that..has me puzzled ..has this ever happened to any body... i'm lost lol..

 

Sounds like you aren't getting enough fuel?

 

Yeah i just bought a 255 in tank pump and a adj regulator

 

Do you know what the fuel pressure is set at? I get cold starts but it always fires up with no hesitation I just have to give it some gas at first.

 

have no idea looks like the just put the stock 96 reg on the 04 rail it goes from filter to the buffer going in and comin out u have reg then return line.. i bought a fitting to get rid of stock reg and puttin this reg between the new fitting and return line and gonna set it at 51 psi

 

Yeah do that. Also make sure your spark plugs are ok. I am assuming they are if it does fire up..

I can't really think of anything else. CEL? Starter possibly? Good luck.

 

Are you running any kind of tuning device like vafc safc etc?

 

Vafc.. checked codes last night ckps ref and knock sensor knock sensor wire was cut fixed that headed to autozone for crank sensor

 

knock sensor won't make ur car not start, but the ckps will def not make it start.

 

That is true. I had a short on that wire leading to the ckps when I tried to start my swap for the first time it would not start. It may be that is it going bad. That would definitely give you some hesitation...

 

ended up goin to wildwood yesterday so i got nothing done until today changed out ckps and still does same thing ..car is starting to **** me off gonna check wiring in a few

 

ok correct me if im wrong but my crank pulley should have tabs the ckps is suppose to pick up as crank spins??? mine is smooth all the way around

 

The VQ35 pulley is smooth all the way around - the VQ30 pulley has the tabs.

 

yeah well if this has vq30 timing components swapped on to the 3.5 block then it should have the vq30 crank pulley

 

Not really - they're interchangeable - except that the 3.5 pulley has no timing tabs, and the 3.0 has four - two very close together. I've done a couple of 3.5 conversions to run in a 4th gen, and I still have both types of pulleys on the shelf. The correct pulley is required for the 3.0 ECU to work and start normally.

Does your engine have a cam sensor mounted in the front timing cover? If so, the 3.5 had the 3.0 timing conversion done - but you have the wrong pulley installed.

 

Yeah has cam sensor on front timing cover ..lol now im trying to figure out how this car even starts sometimes lol

 

You gotta crank it a lot, right? It will start - eventually, but it's not pretty. Look at the comments about about the ckps sensor - they agree that that sensor can be responsible for starting issues. I've seen it happen on Aackshun's Red Devil - when that sensor is dangling down, the engine is not happy.

Just change the pulley - only way to fix the problem. You might ask yourself why the engine was assembled that way. Hope you got a good price on the car. 3.0 pulleys are cheap - but a real pain to change out with the engine in the car. Good luck....

 

Went to junk yard today to get balancer/pulley got it and found a 4th gen with nice leather execpt back seat got balancer heated leather seats and door panels package deal 150 ..Score for me lol put balancer on car fired right up ..

 

http://forums.maxima.org/8512702-post13.html

For future reference.

You CAN start your car w/o a Crankshaft Position Sensor (Reference).

But you are SOL with a Crankshaft Position Sensor (Position) properly functioning.

 

Been drivin car past 2 days no problem at all but now lookin for a shell this car has alot of rot