I have an ongoing problem with preignition (spark knock) in my 1998 Dodge Ram 1500 with the 318 cid/5.2L motor..at 24,896 miles, my dealer re-programmed the PCM and re-routed the spark wires. The spark knock continued. At 35,067 miles, the dealer adjusted the timing; I didn't think this could be done. The spark knock continued. At 43,281 miles, the dealer replaced the intake plenium gasket. The spark knock continued. At 45,093, the dealer replaced both engine heads. The spark knock continued. At 57,452 miles, I installed a colder thermostat and this helped somewhat, but the spark knock returned. And, today at 74,834 miles I installed a set of truck spark plugs to see if that will help. The bottom line is that this truck has an inherint defective design in the engine which is being prematurely worn out due to spark knock. I would like the NHTSA to investigate, and help me in securing a replacement for my problem plagued lemon. Thank you!

- Murrieta, CA, USA

Spark knock noticed, vehicle taken to nearest Dodge dealership(colonial dr., orlando, fl). Vehicle was evaluated by computer diagnostic system and road test: Reported as normal. On further insistance and discussion, service tech found intake manifold gasket was defective and would need replacement. It was also mentioned by this dealership, as well as by several other mechanics, that this is a problem Dodge is having on V-6 and V-8 style engines. This problem has become so widespread that Dodge has published bulletins on repair of this defect. Dodge has also agreed to repair this defect in the V-6 engines. Since I am the owner of a V-8 engine that this defect also exists, I feel Dodge is responsible for the failure of the part in my engine and I should be compensated for the diagnostic test and repair of engine manifold plenum pan gasket. Thank-you for your assisstance in this matter.

- Canal Point, FL, USA