2G Loose timing belt... Possessed dsm! I need a priest

[Bojangles465]

I'm stumped and I've never run into this problem. My cars a 1990 fwd turbo plymouth laser, and it has a hydrolic auto tensioner(not manual), which I just replaced and did a timing job on it(the 3rd one in a weeks time), but after running the engine, the timing belts super loose, but doesn't jump time, but if I hand crank the engine to top dead center, it regains tension. I'm afraid to run it any more than I have to in case my timing jumps and I kill my valves. All timing marks meet up perfectly, but for some reason it looses all tension and I can walk the belt off of the cam gears easily after I run the engine. It's done this with 2 different tensioner a and 2 different belts, but has never jumped a tooth or anything. Thanks!

 

[mitsubishikid]

OEM Auto Tensioner VS. Parts Store Auto Tensioner

So you had major issues with the dayco brand tensioner I take it?

I recall I bought and ran an after-market auto timing belt tensioner from beck/arnly for a few years with no issues, I eventually got the oem unit, but I would stay away from dayco brand for sure.
I have also heard bad things about the cloys tensioner, but never knowingly seen any images of this, or any first hand experience with them.

but if you are low on funds the beck/arnly tensioner at least has lasted a while on my dsm without any piston/valve contact.
according to beck they closely work with the oem manufacturers to produce the closest to oem parts.

you really should only use oem... if you want the best quality.

 

[fourgsixthree33]

So you had major issues with the dayco brand tensioner I take it?

I recall I bought and ran an after-market auto timing belt tensioner from beck/arnly for a few years with no issues, I eventually got the oem unit, but I would stay away from dayco brand for sure.
I have also heard bad things about the cloys tensioner, but never knowingly seen any images of this, or any first hand experience with them.

but if you are low on funds the beck/arnly tensioner at least has lasted a while on my dsm without any piston/valve contact.
according to beck they closely work with the oem manufacturers to produce the closest to oem parts.

you really should only use oem... if you want the best quality.

Correct, it was the Dayco tensioner.

 

[Bojangles465]

just an update; i rotated the concentric pulley and its perfectly tight. didnt jump time and the engine runs like a dream i gotta adjust base timing and ill be that much closer to putting my pte 6752 on

 

[basshead]

Glad to hear you solved it.

I love threads with a update on how things worked out.
Rock on!