I then went to my mechanic (I live in the Dominican Republic) and had the vehicle tuned-up. I did an oil change, spark plugs change (The 2 in the middle were black, burned. The other 2 were OK) and a radiator flush. The car was still having the same problem so we decided to clean the MAF sensor, the throttle body and the EGR valve.
After putting everything back in place, he also checked for a vacuum leak but didn’t find any. We went for a ride and at first, it seemed a little bit better but after the car got warmer, same problem... I connected the car again and we got 3 more codes; P061B, P0300 and P2187.
He deleted the EGR valve and we went for a ride to see if it was the problem but it felt the same. He then decided to go for the injectors.
After listening to the injectors, he found that the two in the middle are pulsating a lot faster than the other two on each side. So, this is probably why the system is too rich. My mechanic connected a system to clean the injectors, took the rail out and tested them and said they were working fine, they are not clogged and have no leaks. He then switched the injectors to make sure. He put the 2 in the middle at the extremities and vice-versa. Same thing, the two in the middle were pulsating a lot faster than the other two even after being changed. So, this proved that the problem is not the injectors. He took the new spark plugs out to check and the two in the middle were black burned while the other two were perfect. He also switched the coils just to see and the problem remains.
He doesn’t know what else to try...
I’m lost, I really need help. I love this car and I just want it to run perfectly.
Why are only those 2 middle injectors receiving a signal to squirt more gas than the other two? What is going on?
What could be the problem?
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Monday, May 19th, 2014 AT 2:33 PM
