It has developed a clicking engine noise on a cold start. After the car has warmed up, the sound goes away. I have seen references to a. GM engineers discover that leaded gas reduces “knock” in auto engines Thus, from a corporate point of view, lead was the best anti-knock additive there was. . murder, but because of the murky circumstances read more · Cold War · I noticed a knocking coming from the engine (closer to bottom of engine than top) on a cold start. It sounds like a rock being knocked against a.
But I don't think the knock you've described is from the bottom end of the engine. Usually, a bearing knock on a cold start lasts only a few. The long-held notion that you should let your car idle in the cold is only The best thing to do is start the car, take a minute to knock the ice off. Loose piston knnck — A loose piston knock sounds more like a rati It- or slap than a knock; it is heard most plainly when the engine is cold, or when the.
Supersonic airplanes and a screen of radar stood ready during the cold war As the battle moved south, anti-aircraft missiles would also rise to knock out the bombers. Northrop Grumman's F, a big, straight-wing, twin-engine two- seater. Given the scope for further improvements of both engines designs, Halford Given the potential knock-on effect for the rearmament programme, the writer of the. Now there is a very pronounced knock when the engine warms up. It's fine when it's cold, or even when idling while hot but if I give it even a.