By Brian England
When a VW got here in working badly with the “test engine mild” on we began the diagnostics by scanning the pc for information. To our shock, we found an extended buying record of codes. Since this was the automotive’s first go to to the store, we carried out a baseline test of the whole automotive. There have been a number of different points not indicated by the preliminary scan, together with a big oil leak.
Since there have been so many codes, we determined to clear the codes to see what codes got here again in the course of the second scan. It turned out the engine crank case respiratory system was blocked and required the cleansing and resealing of the camshaft cowl and associated components. After we corrected this, a lot of the codes didn’t come again on, apart from a code that associated to the engine respiratory system.
We double checked every thing to see if every thing nonetheless regarded good. Since we nonetheless had not discovered the oil leak difficulty, we searched the automobile database for any sample failures associated to this difficulty and located one talked in regards to the rear important oil seal failing. May this be the wrongdoer?
After getting permission to take away the transmission to examine the rear important seal, we discovered the problem (see picture above). The seal had come aside. The rear important seal on most automobiles is a posh thick rubber seal with a spring that retains strain on the crankshaft, leaving nothing to probability however this was a flimsy little seal that simply fell aside. We put in the brand new seal, reinstalled the transmission, reran the diagnostics and the “test engine mild” codes associated to the engine respiratory system stayed off.
“Verify Engine Gentle” repairs usually relate to digital sensors failing. On this case, nevertheless, the problem was a failed crankcase seal.
