HT leads - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
Status: - Update
Posts: n/a
HT leads

Does anybody know if brand new HT leads can be faulty. I've recently changed both the leads, plugs and extension things from the coil packs on my car. The car started to get a misfire not only at slow speeds but at high speeds as well. I've taken the car to a friend of mine who has connected it up to his computer and checked all the sensors etc. He says that all the readings are correct and when he looked at the leads and plugs they appeared to be corroded slightly on the outside of the plugs and left a brownish deposits on the leads. There was now water in the wells and he says that replacing the leads and plugs will solve the problem. Trouble is there bloody expensive and after only just replacing them don't know if it will solve the problem, but i'm not a mechanic. Anybody have any experience to comment about the condition of the leads etc.
Reluctently am going to replace them again, if its not the problem then i may have a full set of leads, extension things and plugs for sale 1.8 16v P reg. Only done about 5K.

Sponsored Links
Status: - Update
Posts: n/a
I had to take leads back for my 1.8litre 8valve. They were falling out of the coils as the connector was slightly wrong.
The leads didn't actually come adrift, but there was enough movement for the car to miss and it felt like the car was running on kangaroo petrol.

Status: - Update
Posts: n/a
you should have,


it could also be a coil fault.
Status: - Update
Posts: n/a
I hope it not the coils, I only replaced those about 6 months ago. Would be expecting it to run like a dream all the stuff i've replaced.
Status: -
AO Silver Member
Join Date: Feb 2002
Location: liverpool
Posts: 1,183

Member car:

155 Q4

have you tried the relays ?
fletch is offline  
Status: - Update
Posts: n/a
Went to see my car in the garage as they've done the work, seems to have cured the problem but bloody expensive to replace the whole set again. Can't help thinking it was just a bad plug and that if each were tested in turn could have traced it. Anyway jobs a gooden i'm now getting my injectors professionaly cleaned as that is meant to make a difference.


Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 155


Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome