workingmanmex

I have what is probably a small problem but need help my car is really hard to start when cold.allot of cranking to get it running but as long as it is warm it starts first crank all day and runs like a charm. fuel psi is about 50 pounds all coil packs are firing checked one by one used the screwdriver method to check injectors each tick only problem I see is spark is a little weak what else can I check ecu code 55 all good

zxguy1986

Welcome to ZDriver

Pick up a free factory service manual at XenonZ32.com Reference along with the other cool docs. You will need them. Check out all the inspection and troubleshooting pages in your FSM, easy to read and follow.

Our Z32 pros will have some input for you. Just hang on.

Thanks and welcome.

workingmanmex

Purchased this car about a month ago. Car is very hard to start when cold. After it is warmed up the rest of the day starts first crank. Things I've done.

1. Replaced Cam Sensor
2. Spark Plugs
3 Temperature sensors
4. Fuel Pressure good
5. Coil Packs.

I found that if I disconnect the fuel pump the car starts right away first crank. I can then plug it in and car runs fine. Is the injectors leaking to much fuel into the motor when it sets.

The only thing I haven't replaced is the injectors they fire fine.

workingmanmex

After trying everything my car still takes a long time to start when cold. After warm up starts all day first crank. A question The fuel pressure with the pump running is 60 PSI but when I shut off the key it drops to zero really fast. I can take the hose from the filter and hardly no gas comes from rail side. I looked for a check valve on the pump but it doesn't have one.
Any Advise
Thanks