280zx - New Motor but has issue cold start - Please help

healthybuddha · Post by **healthybuddha** » Tue Jan 17, 2017 2:55 pm

hello, i have a 280zx that i have owned for 25 years
i just had the motor done up and it does not cold start

it is as if the airflow meter is not working
first start hard to keep going
2nd start hard to put more than 2000 revs on it
3 start i have to play with throttle and warm it up b4 i drive ?

please help
you can contact me at stevenpotts etc

BRONZEE · Post by **BRONZEE** » Tue Jan 17, 2017 8:27 pm

Looks pretty tidy.

DKNWSZX · Post by **DKNWSZX** » Tue Jan 17, 2017 8:44 pm

The problem seems temp related so it may pay to check temp related items:

-CHTS
-Air Regulator
-Cold Start Valve
-Air Intake Temp

OASN (on a side note)

- What is the timing at?
- What is the fuel pressure?

Air flow metre..? How is that? Also electrical connections how are they....?

May pay to look at particular connections on the cold start injector as well as the air regulator connection. My uncle had some similar issues with his vehicle.

Regards
Deano.

bernjean · Post by **bernjean** » Wed Jan 18, 2017 8:43 am

Do what i did, Got my fuel injection upgraded by Hi Tech Automotive. Basically got rid of the old outdated fuel injection system, Shaved the intake manifold and had it coated, New good quality injectors link computer system, used the current distributor, is an electronic type. Made a huge difference in power and drive ability. No cold start, doesn't need it. Starts first pop all the time.

reliablejunkie · Post by **reliablejunkie** » Wed Jan 18, 2017 11:11 am

I agree with bernjean, I took the time to make a complete wiring loom and my L20ET engine is running from a megasquirt ECU. Best upgrade I have made with this car. I have used the existing coolant sensor and the distributor and put an air intake temp sensor in the manifold. Also all the safety features like rev limiter and over boosting protection etc etc.