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Spent the better part of last evening helping my dad attempt to bring his old R75/7 back to life. Its been sitting for the better part of 3 years, and as a result has some problems. We did an oil change and got rid of the old, bad gas and put new gas + a bit of seafoam in it. It starts up and idles on choke, but tends to die when the choke is off and doesn't seem to want to rev above 4K. Feels like the slides in the carbs just wont rise or the main jet is clogged... I'm thinking there has to be some kind of varnish or gunk in the carbs from sitting for so long. I'm hoping the seafoam we put in it will help un-gunk them a bit but who knows how much it will really help. And I don't know enough (really anything...) about 40 year old BMWs to really be much more than a pair of hands so the prospect of a full carb rebuild scares me lol.
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