Looked at a 94 850 GL (NO turbo) today for purchase. Really nice car, no heistation, great acceleration, no warning lights. Getting out I noticed a pop pop pop continuously out of the exhaust pipe. interior of the pipe is sooty, but no smell or moisture. Very low noise level, almost like a small exhaust leak causing it? not smooth like I expected.

Any comments? Is there an exhaust or engine problem under the surface i am missing, or do the 5 cyl engines do this in this model.

Please advise.

Thanks