Looking to purchase an Escort this week. Overall great condition for the age with a lot of history.

I know this is a very broad question, so don't slate me for the lack of information....

But is it likely to have done much damage? Kinda hoping its just a case of helicoil and new plugs/leads.

Apart from a replacement head, could there be anything worse that would need replacing??

Appreciate any advice you can give me.

 

How the fook do you blow a spark plug?

 

Head needs ideally to come off for helicoil, so you will see anyway, but unlikely to have caused further damage unless the plug broke and bits went inside may have damaged a exhaust valve ?, but unlikely.
Try and get a time sert, these are much better than helicoils.
tabetha

 

Not sure the story behind it really.

Assume its been cross threaded at some point or not tightened properly.

Can't think of any thing more sinister that could have caused it.

Hoping just head off, cleaned out, new thread, new plugs and leads then pop it all back together!

 

I cant see anything like that holding under the immense pressure inside a cylinder head. Gonna be a new head IMO.

 

I bet helicoils and timeserts are alot stronger than the original thread!

 

helicoil will be fine, been done meny times before

 

Anyway of checking if any shards of metal are in the cylinder without taking the head off?

 

Done properly they hold 100% perfectly, never had a failure in nearly 30 years.
tabetha

 

Bore scope, pricey so try and borrow one.
tabetha

 

As a design engineer I can confirm that Helicoils are far stronger than plain threaded holes. Wear resulting from frequent use of the thread is reduced and stress distribution to the host metal is far lower. Helicoils are a deluxe solution!