OK, trying to repair the car of a friend.

The car is hard to start, no matter if it is hot or cold, it is hard to start.

Also, he says that when he its the gas (once he finally got it started), after 5000 RPM at WOT, he gets a lot of backfire.

He just had the injectors cleaned and the fuel pressure seems fine.

Anyone know what it could be? he changed the spark plugs also.

Igniter? coils?

anything else?

the car just received a rebuilt engine, could there be a problem with the crank angle sensor?

thanks a lot

puma

 

Did he break it in properly ? I always reference "hard starting" with broken motor. I could be wrong, see what a compression test has to say...

 

CAS? Doubt it. FPR control lines? Look there. Injector sealing/o-rings, look there.

 

CAS? is there such a thing on an FD?

 

he did a compression test, it is low but it is ok

 

also the coolant temp sensor for the computer. /\ fpr and maybe do a fuel leak down test. does it flood out?

 

is there a bad hesitation when it starts to boost?

 

hmm, maybe the coolant temp, could be an option, i know we had problems with the connector...

he didn't tell me he had those hesitation

 

oups, just realised CAS means crank angle sensor

can't be the fuel controle line, fuel pressure is good

 

Could be a bad fuel pump or relay.