misfire just as coming on boost (between 3-4k rpm)

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misfire just as coming on boost (between 3-4k rpm)

Postby olidaviesuk » Tue 25.07.2006, 11:31

Hi All,

Hoping you can shed some light on a problem - Just got my first Elan (SE turbo series 1) - When I got it the previous owner hadn't used it in a while, has ran fine for a week, but when I bought the car it had a crack in the coolant expansion tank (where the top pipe goes down to the thermostat.. wasn't leaking at the time so didn't replace striaght away.. (big mistake and should have known better :?

Anyway - took for a very 'spirited' drive :-D and when I got back and popped the hood to have a good look around and give it a good check over as the car was cooling down - pipe finally gave way - coolant everywhere - including all over the coilpacks.. :roll:

Have replaced the expansion tank and have had a pretty good go at drying the coil out with water dispersant and a cloth etc - but still missfires but only as the car is coming on boost - am I likely to have damaged the coil, or is there still water lurking somewhere - or any other common probs? :?

Going on hols tommorrow so have to sort this whole mess out when I get back :oops: was going to take the following action (any advice or suggestions would be appreciated)

i) Remove the coilpack, electrical connectors and plugs and leads - completely dry - see if that solves the problem..

ii) If not replace plugs and leads,

iii) if not replace coilpack and check headgasket :oops:

iv) if still no joy check injectors (though im 99% positive its an ignition system misfire)

OR

am I missing something obvious? :D
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Postby Monty » Tue 25.07.2006, 11:39

I changed my coolant a few days ago, even thou i bleed the system there must still off been air trapped and the expansion tank must overflowed and went over the coils (ohh what a good place to have coils) :twisted: and got the same as u were the car wouldn`t accelerate. Luckly i had spare set of coils changed them over on sunday and the car runs fine now.

U could try cleaning them but since there sealed maybe it was the heat from the coolant whats knackered the coils :?
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Postby Ashaman » Tue 25.07.2006, 21:45

I had a similar problem a couple years ago, but it came about after cleaning the engine bay.

I think you are right, the coil packs SHOULD be sealed against moisture, but they can develop hairline cracks that allow it in (and unfortunately trap/hold it there).

If you normally drive in pretty dry conditions, it might be fine until they get wet (as happened when I cleaned my engine bay); after that they might dry out again or they might not -- I have had both happen.

But either way, your best bet is just to replace the coils as they will most likely just continued to deteriorate. It is no fun having a car that will barely run every time it rains!

It would be nice if you could borrow another to confirm, but the MSD replacements are pretty affordable.
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Postby Doc Fizzix » Tue 25.07.2006, 22:01

the MSD replacements are pretty affordable.


Any performance increase with the MSD or just a nice "stock" replacement?
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Postby Ashaman » Tue 25.07.2006, 22:07

Who knows, I like to think they did. I figure they must, because they came with some "powered by MSD" stickers which I promptly stuck in the engine bay; so I am sure that was good for 3-5 alone :)

All I really know about it is that I don't have any misfiring issues now; but since my originals were cruddy it is hard to say.

I think I posted the part number a while back, I know some others have also, but if not & you need them I'll go check.
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Postby Ashaman » Tue 25.07.2006, 22:19

Ah, here they are:

http://www.msdignition.com/coil_blaster_9_8224.htm

They have their little description there talking about "improved performance" and "hotter sparks" and such; so maybe they do...or maybe they just have good marketing guys on staff :)
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Postby Doc Fizzix » Tue 25.07.2006, 22:24

Ashaman wrote:Ah, here they are:

http://www.msdignition.com/coil_blaster_9_8224.htm

They have their little description there talking about "improved performance" and "hotter sparks" and such; so maybe they do...or maybe they just have good marketing guys on staff :)


Thanks for the info 8)
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Postby Ashaman » Wed 26.07.2006, 01:54

No problem, I like trying to help! :wink:
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Postby AndyH » Wed 26.07.2006, 09:50

I'm after a set of coils myself. I called the msd uk suppliers and they reckoned a 6-8 week delivery time as they don't normally stock these ones. Can you get hold of them any quicker by other means? I have ordered a set of leads to try and cure a similar problem, but if this doesnt work I'll want the packs.

Ta. :D
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Postby Monty » Wed 26.07.2006, 11:41

sounds like a group buy is on the cards again lol this forum just sucks the money from u`r wallet. LMAO :lol:
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Postby foreleft » Wed 26.07.2006, 15:33

You UK guys in need of coils may want to check eBay #8071784434. Not sure what the shipping cost would be, but at least they say they ship worldwide. I bought a set of these last fall for about $44 here in the US, so the eBay price isn't unreasonable. Just a thought........

Jim
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Postby Monty » Wed 26.07.2006, 15:37

foreleft wrote:You UK guys in need of coils may want to check eBay #8071784434. Not sure what the shipping cost would be, but at least they say they ship worldwide. I bought a set of these last fall for about $44 here in the US, so the eBay price isn't unreasonable. Just a thought........

Jim


http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ru=http%3A%2F%2Fsearch.ebay.co.uk%3A80%2F8071784434_W0QQfromZR40QQfviZ1&item=8071784434

But don`t u need 2 off them? :?
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Postby TStevens » Wed 26.07.2006, 17:27

Its a buy it now with several available...

Postage to UK by air mail (4-10 days) $30.50
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