New to this but I need help, removed my wife's cx7 2.3 turbo engine, replaced timing chain, vvt, crank sensor, installed duel port blow off, new water pump. Only to crank it and it idles really low and when I try to drive it, the car won't fall out of a tree. Will rev in neutral and turbo blows off so it's still working, without it wanting to go, it doesn't shift properly because rpms are not reaching desired point. So I replaced MAF with same result, so I replaced throttle body with same result and last but not least replaced upstream 02 sensor with same result, but now when trying to reach rpms it will throw a random misfire code. Any insight on how to remedy this problem would be greatly appreciated.

08 cx7

 

What is your rail pressure? Any access to the scanner?
did you check your timing? is it correct? any slack in the chain?
Why did you replace the chain?
So many questions. You need to provide more details.

 

This is at warm idle
chain was replaced with locking plates in and top dead center pin in. Chain was replaced because vvt needed replaced so replaced it all while inside. There is no slack and no noise.

 

How old are your sparkplugs? How do they look? Any indication that there is not enough fuel? How many miles/km on the car?
Did you remove the cover to check the slack of the chain? What is the engine code right now? What were the codes before the timing chain was replaced?

Did you inspect the high-pressure fuel pump when was of the car? is the plug for the split valve connected ( solenoid on top of the pump)?
Did you check your crank sensor location after turning the crank bolt and how is the alignment with the teeth?

Any misfire issues before or engine codes before? The fuel injectors in the engine are equipped with paper fuel filters. Over time they fell apart and clog the injectors. Lots of times you will get the misfire code but will not affect the preference of the car.

Your fuel pressure looks good.

There are so many other things that need to be checked.

 

Trying a few things today, will let you know out come and answer the questions soon. Thanks

 

where can you check the fuel pressure?