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<x-charset iso-8859-1>MarkS=> I think this was because the => carb for 1&2 had a sticking needle valve => which was causing them to run very => rich and so too cool and as they control => the cooling flaps, 3&4 were => overheating ... This seems unlikely in the extreme if 1&2 were firing at all. There are several ways for heads to come loose, most related to assembly error. => I want to check the fuel level in the carbs. The fuel level is set by the thick (about 1.2mm if I recall right) fiber washer under the needle valve. No washer or a thin washer and your level is too high. Be sure that the float is not leaking. Other than that there *is* no adjustment. Don't try bending the float arm, whatever you do, you'll just mess it up. => get the throttle shafts re-bushed, If they need this, it's the most likely source of your misfire. What seems like a tiny leak here will seriously affect performance, I guarantee. Have you tried tracing the misfire to a specific cylinder or side? (You can use a strobe for this.) Try the carb-cleaner test -- with the engine running, spray around the butterfly assembly. If the engine stumbles, you've found your leak. Some things you may have already eliminated or even written about here, but humor me -- what fuel pump are you running? Is your balance tube present and in good shape? What distributor, and what condition is it in? Once again, and not for Mark specifically, I'll add my carb rant -- the difference between a set of PDSITs just running and running right is huge in terms of performance and very subtle in terms of setup. If you can find a guy who *really knows* to help you get them set up and show you how to keep them that way, you'll be way ahead. This is arcane knowledge and not as simple as it looks. Steven Ayres, Prescott AZ '66 Big Ghia ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/ </x-charset>