986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Different Smell from Hot Engine

ike84 · 01-24-2022, 05:40 PM

It's more frequent for a cat to plug and do what it did on your mustang than it is to see one fall apart from the inside like your rover.

Your smell may be a small oil leak (spark plug tubes are common culprit, drip into exhaust piping).

What does the noise sound like? A rear end rattle could be a lot of things.

I'd get the car up on jacks and have a look around to figure those two things out.

A fluctuating idle can mean a lot of things. If it's only with cold startup at idle, it's likely a small vac leak. Do a manifold vac test and see what that shows you.

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01-24-2022, 05:40 PM	#6
ike84 Registered User Join Date: Oct 2020 Location: KY Posts: 1,214	It's more frequent for a cat to plug and do what it did on your mustang than it is to see one fall apart from the inside like your rover. Your smell may be a small oil leak (spark plug tubes are common culprit, drip into exhaust piping). What does the noise sound like? A rear end rattle could be a lot of things. I'd get the car up on jacks and have a look around to figure those two things out. A fluctuating idle can mean a lot of things. If it's only with cold startup at idle, it's likely a small vac leak. Do a manifold vac test and see what that shows you. Sent from my SM-G970U1 using Tapatalk __________________ 2000 Box Base, Renegade Stage 1 performance mods complete, more to come When the owners manual says that the laws of physics can't be broken by this car, I took it as a challenge...