stevedavies

Chris
I just checked ECP on line. They only have coils ( £52.50 ea ) and rotors ( £36.00 ea). No ignition leads or distributor caps stocked. I have a local branch of ECP in Swansea. It sounds like you had a real good deal as coils and rotors list price is approaching £200!! Appreciaite any help!! Steve

WallyP

The Ignition Monitoring System monitors the exhaust gas temps for ignition system failure.

If the red LED is illuminated, it indicates that the right ignition system has failed, so the monitoring system kills the injectors in cylinders fired by the right ignition system - 1, 7, 6 and 4.

If the green LED is iluminated, it indicates that the left ignition system has failed, so the monitoring system kills the injectors in cylinders fired by the left ignition system - 5, 8, 3 and 2.

The system does suffer from problems with the temp sensors, and can give false indications.

The most common problem causing four-cylinder operation is corrosion in ignition coil connections from wash water and rain spilling onto the coils from the edge of the fender.

Chris Buckenham

Steve ,
The previous poster , Mr Wally Plumley is considered as somewhat of a general expert and I have searched and used information from his posts and studies on certain subjects to great effect .
In the morning I will take the 928 to work and all the recent bills are in the glove box and I am sure that I did not pay that kind of money for distributor caps etc. The coils were in the £25 region and I specified the porsche part number for the coils and they are the Proper Bosch item. I seem to recall the spark plugs were again specified by part number and a Bosch Platinum single electrode plug they supplied were about £2.00 each . They were not gapped correctly out of the box . If required I can call the guy I spoke to on your behalf and refer to what I paid last year to check , but I am sure that they will hold the pricing .

Chris Buckenham

Steve ,

The online thing is a bit of a waste of time for the 928 at ECP , you have to talk to the bloke at Wembley who is the Porsche parts Guy and then um and ar at the price and it comes right down - in the morning I'll get his name.

Chris

Landseer

Advice, be sure to strongly consider the sets which are fully made-up, including the rubber protective hoses that are placed on wire sets.

I went economy and am not happy with that choice.

I also recycled caps and rotors, bad choice on my part.

James Bailey

Yes Wally is very much an expert on the 928 and always makes it very clear...... Great asset for Rennlist.

928 at last

You may want to contact RogerTyson @ 928s R Us. He's based out of Texas, but I know he has European customers. If the parts are outrageously expensive it might be worth the shipping and wait for the price.

karl ruiter

You can get an ignition probe lead off ebay for under $50, and an adaquate chinese oscilloscope for $300. Might be cheaper to buy some equiptment and take a close look than just blindly replace expensive parts.

stevedavies

Update on misfire. I now think it was running on 4 cylinders. The oily plug I saw was a red herring. I guess the cam seals are leaking and when i removed the plug it seeped down to the plug electrode. What confused me is that when I cleaned plug and replaced it car ran again fine. I have now conneected the disconnected earth lead back to the engine pull bracket ( drivers side rhd). I have disconnected all HT leads and cleaned etc and replaced. I am guessing these are original parts. Drove the car 10 miles to work this morning with no issues. Have the clear relay exposed now so if it reoccurs I can look for lights.
Wally, thanks for the note...we are having some heavy rain here at moment and the problem occured in the wet. Maybe a co incidence but have logged it as a possible cause. Problem occured when returning home from work, car started fine but within 100 yds started the misfire. It did not clear itself at all until I got home cleaned and replaced an oily plug. Hasnt reoccured (yet).
Chris Thanks, never have had much luck with ECP on line, I usually use Roger in US, but shipment through UK customs etc adds weeks onto delivery

stevedavies

Wally, sorry forgot to ask, in your post you mention temp sensors and potentail associated problems. Which temp sensor(s) are you referring to?

WallyP

The two exhaust gas temp sensors mounted on the bottom of the exhaust manifolds. They will sometimes give false readings and trigger the monitoring relay. In these cases, you can occasionally solve the problem for a few years by loosening the sensors and rotating them ninety degrees. (I think that may have originally been a James Bailey suggestion.)

Mrmerlin

if you had to clean oil from the plug well then your cam covers need a refresh along with new seals, it is a bit of a chore .
Use a bead of Hondabond in the cam cover seal groove,
and use the sealing washers on all of the bolts Roger sells them.
If you had this plug misfire then the injection system may not have been shutting off so look at the cats and see if they are glowing if you do get another misfire event.
If they are glowing red shut the engine off ASAP.
Cat fires do happen

stevedavies

Thanks will add the bolt sealing washers to my list for Roger. I am now much better informed re the problem. If it occurs again I will check clear relay status, cats etc. I drove home 10 miles this afternoon without incident. Cam covers and ignition are next on my list for refreshing

stevedavies

Have ordered ignition parts and cam gaskets from Roger ( thanks Roger..very competitive) so should prevent problem re occuring. Mr Merlin recommended using Hondabond on the Cam gaskets...is there an equivalent ?? Cant find it in UK??

Mrmerlin

Honda Bond is found at the motorcycle dealers also called Yamahbond at the Yamaha dealer.
It is gray and its a non hardening semi soft sealing material
http://www.google.com/url?sa=t&sourc...2Phorw&cad=rja