Anyone ever heard of this?

Recently Replaced my injectors with some 19 lb. Accel units and now the car is hard to start warm (and hot). Gotta crank it about 4-5 seconds before it lights up...

Did full tune-up, didn't help. Replace 02 sensor, no help.

Car had no problems starting while hot with the stock injectors even though two of them mearured out-of-spec....

Fires right up when cold

Car is a bone stock '89 TPI LB9 Dual-cat 5 speed Firebird Formula (no cold-start injector) that I bought brand-new.

Thanks, Rayvan

 

maybe they are a bit leaky, that would explain the good startup in cold and poor warm/hot starts...

 

Thanks for the reply.

Thats what I thought at first, but the system seems to hold pressure. If I press the schraeder valve, even after a week of non-use, there is still good pressure on the fuel rail.

 

I would get a fuel pressure gauge and watch how quick the fuel pressure drops off after the car is turned off.