hard start question..? anyone.

[1990_whitecomet]

On cold start she starts fine idling at 3000rpm(typical and normal) drops slowly and idles fine just right on 900-800rpm.. but when she get hot or at operating temperature its alot harder to get her started.. she cranks struggle trying to start, somtimes catches and start.. after first start, usually i crank the car with the fuel pump d/c for a few times. With cranking and right when it catches and start i just quickly re/c the fuel pump and she runs fine.. so my question is on a cold start/first start, she starts fine idle fine. but when she's started/warmed its just alot harder to get her started or even to just start.. i've tried searching and reading back on alot of articles.. some with good knowledge that can be of some use too.. ehehe more info and pictures posted on the west fourm.. http://www.rx7club.com/showthread.php?t=480368 jeff

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[patman]

you have one of three problems:

low compression
leaky injectors
bad sensor

check the ecu for error codes, do a compression test, if good on both, get the injectors cleaned

pat

[1990_whitecomet]

sounds good.. but can you explain them to me so i can get a better understanding of what im dealing with.like howS and whyS.also which sensor? thanks..

jeff

[patman]

if its a sensor, the ecu will throw an error code, telling you which one. if you dont know how to do a compression test, take it to a mazda dealer and let them rip you off for an official one. if both of those are ok, then you take out the injectors and send them to a company like rcengineering where they clean them and send them back to you.

if you do a search you can find out how to check for error codes and how to do a compression test