Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi there. I am Cam. Is it losing coolant now?
OK, but my concern is that you're losing coolant now. On your engine, the injectors have a removable sleeves that is supposed to stay in the head. Sometimes it may be allowing coolant into the cylinder. If the white coolant, and one of those sleeves has pulled out and it leaking.
The other concern lies with the cleanliness of the injector line. The long injector not to go to the valve cover is bad for trapping dirt and on the backside. If those were not cleaned out thoroughly prior to installation, some dirt falling into the injector and causing the injectors stick open when it shouldn't be
Do you do you have a scanner that can read and control the fuel pressure?
Where did you source be injectors from?
Ok, sorry for the delay, I would think that one of the injectors may have an issue. The scanner will be vital for this.
With the scanner we need to first check balancing rates. +4 to -4 in park when hot and +6 to -6 in drive stopped.Then do the return test. Find the 2 fuel lines on the rear drivers side valve cover. Take the smaller one off and attach your hose to the metal pipe coming from the engine. Put the other end into the container and run the engine to fill that line. Then shut it off and remove the IGN 1 relay from beside the starter relay. empty out the container and keep the line full. Crank the engine for 15 seconds fully and measure the amount of fuel that comes out of that line. More than 24cc means the injectors are still returning too much fuel and causing this.
Ok, sounds good.
Needs to have #2, #3, for sure replaced and #1 is close. Spec is +/- 4 in park when hot and +/-6 in drive. 2 is front drivers side. 1 and 3 are first 2 on passengers side.
- numbers mean the system is trying to take fuel away, like the cylinder is getting to much. After idle in drive, the balancing rates stop so those cylinder will be getting too much fuel and will smoke.
Was it as warm as before? When running, do they change a lot?
Its still an issue that those changed. Go for a drive, get it hot and try one more time.
that is my next suggestion.
I hope you have warranty on those because that is about 3 times the allowable.
Ok, sounds good. I am still thinking injectors are bad. Why they are different rates is odd.