Cam Swap car won't start

leafs31 · Post by **leafs31** » Sun Nov 15, 2009 1:55 pm

I swapped in a2 cams from a type s with a3 exhaust rockers(Vtec killers) into a a3 head now I can't get the car to start. I tried -20% in cranking fuel trim and it makes a hint that it will fire but then never again till I pull the plugs and let everything dry out.

Do I change ignition values too,change fuel maps? I'm using a stock a2 map as a base map as well.

Or does anyone have a calibration I can use to get it to start?

Are there any sensors I can look at to see what I could change to crank over.

JustinC · Post by **JustinC** » Thu Nov 26, 2009 2:25 pm

More than likely it is your timing is off. If the crank sensors and cam sensors are out of time the car will never start.

leafs31 · Post by **leafs31** » Mon Dec 07, 2009 9:54 pm

I got it figured out that day had to play with the ignition and cranking trim.

djcarbine · Post by **djcarbine** » Fri Dec 11, 2009 12:09 pm

leafs31 wrote:I got it figured out that day had to play with the ignition and cranking trim.

What is your idle set to, and how many inches of vacuum are you pulling?

leafs31 · Post by **leafs31** » Fri Dec 11, 2009 11:03 pm

I would have to look but to have a smooth idle I have it at 1000 and the vacuum is less since it is a vtec killer setup.