I am still chasing several misfires and other codes. I have a 2000 Disco II (SAI).. I have replaced the plugs Bosch Plats, 8MM STI wires, new paper filter, all vacuum seals are good, hoses and clamps checked and sealed, Compression test is well within specs on both banks. Where do I go from here??

Codes
1171
1174
300
1300
303
305
307
306

I only had 303 and 305 for a while... Now I have the other teo misfires.

 

are you losing coolant?

was the MAF replaced?

 

I am not sure on the MAF. It looks to be in the same condition as the rest of the system. Over the course of the last 2 months I have lost about 1 inch of coolant out of the overflow. I have pulled plugs and see no liquid or rough looking plugs. I have noticed in the last week there is a lot of buildup of gunk on the power steering res.

 

the 1171 and 1174 point to the MAF, but normally you get a tranny code with them. if i were you i would clear the codes and disconnect the MAF. whatever you do don't try and clean the MAF that will kill it for sure.

you checked the oil for coolant contamination?

have the headgaskets been done?

what color is the gunk at the power steering resovoir?

sounds like you have multiple issues.

 

What do you mean by disconnect. I will have the oil done on Monday and take a look at it. What exactly am I a looking for in the oil? I am almost positive the Head gasket is still the original. It is something I am considering. As far as the gunk. It is only on the pas side of the tank. It appears to be power steering fluid only gunked up. It is black is but does not have an oily consitancy.

 

pull the dipstick and see if the oil is milky looking.

i think your HG's are going.

 

No the oil looks good in off the dipstick. I am going to drain it tomorrow and take a good look at it.

 

Sounds like another valve job, pull the heads and ream those guides!