Finally becoming frustrated

riceybean

Well-known member
Jun 29, 2008
861
0
Vancouver, WA
I had Bosch 4's in mine when I bought it and ran like absolute crap, this was in Westminster CO. I put in the regular NGK V power plugs and it ran like new, just sayin..
 

Parke_A_Saurus

Active member
Jul 6, 2014
41
0
Western, USA
So I dropped the Disco off at a local shop to get rid of the old burned out cats. When it gets out I am going to replace the lower intake manifold gasket (valley pan gasket). I'm thinking that could be causing all my random misfires and will be replacing the plugs with OEM equivalent plugs.
 

jhdouglas221

Member
Jul 31, 2009
12
0
Keizer Oregon
I had Bosch 4's in mine when I bought it and ran like absolute crap, this was in Westminster CO. I put in the regular NGK V power plugs and it ran like new, just sayin..

Damn! I spent a f***ing fortune on those plus 4's about 70k ago. The last 10k, however, I get an occasional misfire. But replaced the 8 year old optima with a new one and haven't thrown one since. It's been getting 12mpg in town and 15 on the highwwy. Should I be gettingbbetter mileage? Has stocktires and sounds fine, sans a very light lifter noise. Overall it has 170k on it. 99' 4.0 d2 It just got a new timing set last summer when I gave the POS cooling system a new modern makeover
 

danleym

Active member
Jan 5, 2014
29
0
Colorado
Super ultra 16x uranium-plutonium quintuple fire plugs are great- if the engine was designed for them.

I've been tempted by all the promises before, too, but I've learned that spark plugs are one place to not try to upgrade. Engines that come from the factory with nothing special copper plugs like having nothing special copper plugs in them. Parts counter dudes (been there, too) will try to sell whatever their computer tells them will work with your engine, but stick with the stuff that came in the engine from the factory.
 

Parke_A_Saurus

Active member
Jul 6, 2014
41
0
Western, USA
So after much frustration and cussing at the Land Rover I finally figured out what the issue was. Had to tear the motor down to the heads and replace the $15 lower intake gasket. 8 labor hours later it is running like a champ! And saved myself $600 in the process!