resources did my gapping for 1,2 and 3 to .042. runs a bit better. the idle is still rough. SMS is blinking. could it be the injectors?

 

SMS Blinking? Do not drive. Catalytic will be compromised. Recheck codes.

 

Service Engine light. rgr so no driving till issue is fixed. will recheck codes when I get a chance.

 

To a point, misfires could also be injectors. I am not sure if clogged injectors will present a code unless its injector circuit related that caused its malfunction. Some codes like P0201, P0202, P0203, P0204, P0205, P0206, P0207, and P0208. I think the way to test them is to check them individually.

 

is checking the injector a hard task? I am stuck doing most of my repair work at night.

 

If your up to the task, then its not too difficult. Couple of bolts but a lot of patience. Its hard to see from the engine. You'll be able to see just the front ones. Its a job almost near doing a head gasket, almost. This only if you have to do it. Its just because, once you get in there, you might end up replacing a bunch of stuff. Something like, after putting things back you might have wished you change the head gasket. Its just roughly six bolts to get down there. Give and take, a month of work and waiting for parts. Better have all the parts. Injectors cost about -$100 remanufactured for 8pcs. Got those when I replaced my head gasket.

 

This is how far you have to go.

 

is the method or procedure to clean the injectors? I will doing the HG and injectors in one go.

 

Here is where I got my injectors if you decide to purchase.

*3 Year Warranty* 4.0L 4.6L V8 Replacements GENUINE BOSCH Fuel Injector Set (8) | eBay

Here is a link how to clean them.


Well, if you decide to take a plunge, there were about 6 guys in this forum who did the head gasket since november. I'm sure there are plenty here who can help in case you get stuck. Cheers!

 

This is the guy I used and he was jam up and they work great. http://Look at this on eBay: https://www.ebay.com/itm/121949854605 Bosch 0280155787 Fuel Injectors 99-04 Land Rover 4.0L 4.6L Discovery II Set of 8