Re: [alfa] 164 QV low pressure and engine rattle......

[hagen_jason@xxxxxxxxxxx]

I am not sure the oil pressure is a problem.  It may be lower viscosity oil or warmer weather causing that.  Perhaps check it out with a calibrated gauge.  I suppose you could have a dying oil pump.  How many miles on the car?

The tapping may be idler bearings in the timing belt or accessory belt set-up.  I just did this job (timing and accessory belts) on my 24v 164Q and found two loud bearings on the idlers which were the cause of my noises (which sound similar to your description).  Good luck!

--
Jason Hagen
Chicago, IL
'73 Spider
'95 164Q
> hello all
> Over the last week my car (1995 164QV) has lost some oil pressure and developed 
> a srange rattle (sound familiar)
> I have changed the plugs and the oil it has helped a little
> but its not the same as it was.....to sum it up.....
> when the engine is cold oil pressure is about 4.5. (previously it was 6)  
> As the engine warms it starts to drop.
> At idle with the engine warm the pressure is down to 1. 
> At 2000rpm pressure = 2.5  
> At 3000rmp pressure = 3.5 
> Previous to this the pressure was never below 2.5
> Now the  strange rattle..it can be heard especially when engine rpm is 
> decreasing, between
> 1700rpm down to 1400 rmp (once again only when the engine is warm). 
> There is no rattle when  engines rpm is increased???? (like a tappet noise but 
> louder)
> Your comments as to wot u think it could be would be appreciated....
> Regards to u all .....Jab
> Win a $20,000 Career Makeover at Yahoo! HotJobs 
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