1979-1993 & 94 Conv [Subscribe to Daily Digest] |
Members do not see ads below this line. - Help Keep This Site Online - Signup
Hello
Very simple story ;)
One of my "not so close" friends bought a 900T APC/manual with slight more then 110000 original km.
I know the original owner ( decent lady ) and that car always was pampered by here and the local Saab dealer did all needed maintaince and somehow moved here finally into a new Saab ( Well a Estate with automatic and ultrasonic park sensors made here move into it but she allready misses the rubber bumpers, the smell and some other stuff from here good ol 900T ;)).
Now the car wasn´t really used hard and mostly for occasionaly traveling and i drove some 8VT who where much more responsive on the throttle but can´t remember an engine who was quiter and smother. ( I drove a 900 16V Aero as personal ride years ago )
I did a 500 km testweekend to make sure the engine got decarbonized Refreshed the oil and greased here ( doors & locks ) and there ( electric windows, Well hugh your pets ;)) and made a fresh TÜV&AU approval ( well just an other reason to drive it ).
So my "not so close" friend has the car now four weeks and came back this weekend reporting that the engine "lost" some power after doing a longer swift with 220+ km/h on the Autobahn ( guess he was on 95-105% WOT ).
However the engine was still runing with some harsh noise & occasionally backfire and he managed to humple back to me, wich was a 400 km trip since the incidence.
Tough with some 180 km/h topspeed at the begining and finally the engine only delivered enough power for 120 km/h. ( US Readers: we are in germany and 120 km/h is the recomended speed for highway use and did i say that his status went from friend to " not so close" friend. Before that he drove Renaults & Opels ( GM ) so that was pretty normal for him )
A quick check showed that cyl 1 was dead.
However the spark was there and the plug was oiled up but didn´t looked/smelled to fuely so i guessed the injector might stuck.
Pulled the cyl 1 & 2 for testing and both worked similar.
Headscratching
now checking compression didn´t show big differences and leak down showed that #1 was the best from all four.
More headscratching
then using the boreoskop and manged somehow to look inside the engine trough the sparkplughole and while turnig over the engine to check the bore i saw that the intake Valve didn´t opened.
Poping off the valvecover showed that the tapet was broken and shreded into pieces including bursting the camcase on the Intake side.
Some 80% from the debrices could be fished from the head and puzzled together.
Say some metal from the tapet and aluminium from the case is still wandering around inside the engine.
Now i asked around the master tech at 2 local dealers if they ever had such a failure and well both couldn´t remember seeing anything like that however one from them couldn´t remember seeing a 900 8VT in his workshop ;). Unfortunatly this tech is working at the company who always maintainced that Saab.
He gave me the privat phone from the retired master tech and this one knew storys about stucking lifters and also remembered that car and thinks that they never needed more to do then simple maintaince so the internals should be like assembled at Trolltown. He thinks at the last major maintaince they checked the valve lash but it didn´t need a adjustment ( thats routine & normal )
However he had a story from a costumer wich missshiftet the car wich cracked the tapet and broke/splitet the camshaft ( or vice versa ) on cyl. 3 and so that stoped the engine.
That happend with some 250000 km on the odo. Engine got a new cam assembly and a flush and the last time he had that engine in service it had over 350 000 km on the odo.
Now anyone in this NG ever heard something about such failures ?
OK guys Saab engines seem to be invincible and as my not so close friend ( beside killing the engine he managed to litter up & smoke in THAT car, i promissed the original owner to find a nice wale rider ) is short on money ( that car was sold as a bargain to him ) we decided to go for replacing the broken parts, flush the engine and look for a good spare engine for the future.
I´m a tech working mostly on vintage Porsche, Mercedes and ocasionaly Exotics I have no problem on the hardware but I miss some software ;)
I guess i have to shop a Chilton, Haynes or Bentley workshopmanual.
Any recommendations ( tough I would prefer german & metric specs but ebay shows no hits in german language )
Or eventually get here enough input to manage that.
Tough i tried the search but i don´t have the time to go trough all the hits.
( there were some nice close bys; http://saabnet.com/tsn/bb/900/index.html?bID=194897 )
Grüssle IXXI
posted by 80.139.48...
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
