The clatter from the vacuum pump pushrod is from when the pushrod
wears too short- usually from removing it and re-installing in the
wrong direction, which wears the cam lobe and pushrod down. Then it
hits the head each time and clatters. I made this mistake once, and
had to replace the cam. The pump seals tend to leak oil, so people
reverse the pushrod accidently while replacing the pump seal against
the head.
I'm pretty sure the turbo and injectors are basically the same garrett
T3 and bosch units as on my benz. If the turbos were new could they
both have been defective- were they both purchased from the same
place? Why were the old ones replaced? I've seen the origional turbos
with 500k+ miles on them- they rarely wear out when used with
synthetic oil, and a proper air filter. I've seen them make noise when
the compressor turbine gets nicked by foreign objects if the air
filter isn't installed properly, or if they're rebuilt wrong and not
balanced.
I love the 700 series volvos, because the ergonomics of them fit me
really well. Probably my favorite car model of all time.
Sincerely,
Tyler
1987 190D Turbo Biodiesel
On Jan 22, 2010, at 8:28 PM, Peter Frederick wrote:
Well, all three of the ones I'm familiar with had much more turbo
noise, more injector noise, and a horrible clatter from the vacuum
pump push rod.
Best driving car I've every had (probably true of all the 740's) --
very comfortable and just flies down the highway effortlessly. Got
31 mpg on the highway, too.
Turbos were both brand new, by the way...
Peter
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