ChatterBox
If its a cracked inlet manifold, you wont need a smoke test to visually see it
Regards
Daz
Member
Agreed Eric. My question is however, if only one tappet cover has a crack in it, effectively allowing pressure into the tappet & cam area on say the drivers side, is there an oil gallery or similar that would allow the pressure to flow to the passenger side tappets. If not, I assume that I will find two cracked covers as both swell up under turbo pressure.
Steve Lex
TopicToaster
SubscriberThe crack externally not internally to the engine. They expand and contract and eventually split to atmosphereOriginally Posted by Steve Alexion
2010 TDV6 3.0L Discovery 4 HSE
2007 Audi RS4 (B7)
Swaggie
The whole top of the cover is the inlet manifold which is why it expands under turbo pressure. The underside of the cover covers the camshafts except where the inlet feeds into the head.
Not quite the whole top but the escaping oily substance is inlet air and oil vapour, not oil directly from the sump.
MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
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