redwine300

As above really.. After many searches on the forum, I seem to keep coming back to.. NGK PFR6B-11C My only reservation is that the workshop manual lists.. PFR5B-11B :confused: Can someone advise me please as I would like to order today if possible. Thanks in advance. :thumbup1:

So, just before I order new plugs... Are these the correct ones? I believe so. NGK PFR6B-11C Also, where might be the best place to source them from?

Agreed, my fingers are firmly crossed. :clover:

Thanks again Graham.. :thumbup1: Checked the CAS connection, all appeared good.. no change. Swapped out the TPU for my known working one.. no change. :confused1: Thanks also Stephen..:thumbup1: I did a ohms test across all six and all came back good. :confused: So, at this point I decided to fit a spare set of old plugs, they are not the correct ones exactly, but I thought they would suffice for a test. Guess what!.... No more bl''dy misfire!! :blushing: Can't believe it as I had checked the originals several ways. Could this be simply down the the plugs being over gapped? (I will need to check them) Maybe one of them is just simply on the way out.

:happybday::balloon::balloon:

Thanks Graham, I will double check the connectors again, although I have completely cleaned and greased them with dielectric grease. You never know though. Can't think of what else could affect just the one bank. Hopefully it may be as simple as a failing plug. Is there a way of checking the harness to both the injectors and the coil packs? Say voltage or continuity? If memory serves me right, I think Jeff once mentioned that there is a type of insulation that breaks down.

Hi Dougal200, So far I have checked both the fuel injectors and the coil packs, both seemed okay. As for the plugs, I did do a basic continuity test along with an insulation test. Both again seemed okay. May swap the plugs over from left too right and see what happens. Fingers crossed.

Still searching for the cause of my intermittent misfire, I decided to check the resistance of all 6 coil packs. Guess what, they passed with flying colours, so still none the wiser. I even swapper them all over from left to right to see if the issue moved with them, but no change. Stumped at the minute.

Always wanted to do something like this, not sure I would have the cahoonas though. Respect.

All the gear but no idea springs to mind. :oops:

Absolutely brilliant Andrew, thank you. Now I can set about collating various Web pages and post references in one place. :thumbup1:

Not sure if this is possible, but can I somehow track certain posts so as to make it easier to revisit at a later date? I know about the search function, which is adequate I know, just wondered if there was a way of say, adding/marking certain threads, as favourites for example. It's just that my memory is awful sometimes and every so often I say, "I've read that somewhere" but can never remember where. It's an age thing I think. :blush:

Thanks Joel, my aspirations are to consider keeping the block as stock, and hopefully add whatever is considered a safe optional upgrade without going overboard. (Subject to budget that is)

All stock at present Joel. The only mod, if you can call it that, is a stainless de cat exhaust system. Mind you, the bottom end has only covered approximately 22,000 miles, so I am hopeful that it would be comfortable for a mild power upgrade.

Joel, are your engine internals stock? or have up upgraded them also? If stock, I would be interested in a similar upgrade.

Well, after a bit of patience and a lot of adjustment, I finally got close to 15% @ idle. Figure is very sensitive to engine temperature I found. (makes sense I guess) Thanks again Lymon.. :thumbup1: Still chasing my intermittent misfire though. One thing I did notice again, was the correlation between the RH o2 sensor and the misfire. The drop off of the o2 reading was instantaneous with the misfire, very in sync. That's got to point to something specific, surely?

Nice work.

Thanks Lymon, :thumbup1: I will make the adjustments as you suggest either later today or sometime tomorrow. I did set the base idle a little low at 600-650rpm to be honest.

So, after a fiddly few hours re assembling everything, DataScan looks like this... To be honest, I'm not too sure what to make of it all really. The only odd thing I did notice was that when my pesky misfire occurs, the RH O2 sensors drops right off and then jumps back. Would this be a reaction to the misfire? or possibly the cause?

Sound advice! My garage width is 8ft, pain in the proverbial.

Thanks Joel, appreciate the help and advice. Luckily, I do have a spare gasket to hand.

Prior to fitting the valve, I thought I might as well give it a good internal clean. Considering the relatively low mileage, it was a tad sooty. One thing I did notice whilst doing so, was the very free movement of the larger solenoid valve piston. I mention this as the one on the existing did not move at all. (seized me thinks) I'll know more when I fit the newer one I guess.

Think I will follow your lead Andrew, as mine are the original Black ones!

Cheers Andrew.. :thumbup1: I'll fit it today and report back.

With this in mind, is the general consensus that I should or shouldn't fit the second hand unit? I've checked the OHMS readings, and they tally with the manual.