[Peugeot-L] Re: 405 S questions

From: p404c <tippett_at_shaw.ca>
Date: 12/02/07

  • In peugeot-L@yahoogroups.com, "peugfan@..." wrote: I could pull only the two plugs on either end; the two middle plugs wouldn't budge. I soaked them with PB Blaster which didn't do much good, although maybe after a few months....? Could this be related? Engine feels like it's "running on three cylinders".

Uh oh. I will predict that the head is severely cracked, with two of the cracks running down the centre cylinder spark plug threads.

This happened to me with one of the 404 KF2 Injections some years ago (1988) when I froze the coolant on a long descent, creating an airlock and overheat when I was climbing a hill right afterwards. I cooked the engine even though it ran that way for only about one minute.

About a year later, the #4 plug was so tight that I broke two spark plug tools getting it out. The engine seemed to be running fine actually. A post-mortem a year later when I scrapped the car revealed a nice dislocation-type crack right up the plug hole threading. I still have that head (not sure why - souvenir?). Years after that I bought a brand new head which I still keep in its Peugeot box, as insurance against a similar misfortune with my 404 C.

Regards
Mike Tippett
404 Coupé Injection
405 DL (semi-retired at 366,000 km)
Mercedes-Benz B 200
smart fortwo cdi pulse cabriolet Received on Sun Dec 2 00:01:35 2007