View Full Version : No combustion on cylinder 1

07-28-2005, 08:29 AM
Hi All,

I took my s14 with sr20det engine for a spin today en everything was fine.

Did drive it slowly and not boosting.
I did a quick stop at a friend and when I started the engine again I heard the engine was running on only 3 cylinders.

Back at home I checked the plugs and all were fine and all very having a spark.

Suddenly after no reason the engine was running fine again and I took it for a spin again.

After driving for about 20 min. it started to run on 3 cylinders again.

Does anyone know what could be wrong?

I have spark on al cylinders.

The only thing is that the car has been standing still for about 3 weeks.

can it be a faulty injector?

I have brand new injectors from denso and my engine has only 14000 km on it.

Please help.



07-28-2005, 08:45 AM
maybe a stuck injector.

run 2 wires to the injector leads.

connect the other side of the leads to the pos, and neg battery terminals.
you will hear the injector click.
then reverse polarity, you will hear another click.

keep reversing, for about 15 times total, and if it was stuck, that will gget it unstuck

07-28-2005, 09:26 AM
When the car runs on three cylinders where any of the plugs wet? Very well could be a stuck or failing injector, pull each coil pack when it does this so you can figure out which cylinder it is. Then you can try Spoolin's idea on that injector, or pull the fuel rail and see if its a leaky injector o-ring. Good luck.

07-28-2005, 09:28 AM
If its not an injector then its one of the coil packs. You need to pull each one to find out which cylinder is the proubelm first.

Then check the injectors, then check ignition, and It still sounds like you have compression so no worries there.

07-28-2005, 11:30 AM
Well guys,

Thanks very much for youre help.

Problem is sorted.

I saw that I had no injector duty cycle reading on my avcr.

So I checked the computer and found out that the connector to the computer was not fully thightened and did make a loose connection.

So injector no1 did not get any signal.

Car runs fine now and I am a very happy man again.