Volvo RWD 120-130 Forum

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Switch Them 120-130

posted by  red92s on  Sat Sep 26 09:37 CST 2009
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last visit: Mon Aug 18 13:02 CST 2014
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Well the fit was tight even when moving the pistons in the chambers by hand when OFF THE CARBS, so I knew it wasn't a jet/needle interference.

I took some 000 steel wool (very very fine) to the circumference of the pistons and the mating diameters of the pistons and chambers then cleaned with carb cleaner and lint-free rags. Put some light oil on the coontact surfaces, grabbed a beer, turned on the Miami v. Virginia Tech game and cycled the pistons in the chambers a couple hundred times each. The seem to slide pretty freely now while still sealing well. I was never "forcing" them, just working them. Both seem to slide freely now and I will attempt in installation again. Only thing I can think is that some minuscule amount of overspray or grit was prevent a slip fit and needed to be fully expunged.

I like fixing Volvos. It frequently involves drinking beer and watching football.






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New Needle pistons sticking in vac chambers [120-130]
posted by  red92s subscriber  on Sat Sep 26 06:01 CST 2009 >


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