Expensive exhaust bolt

mpsss

New Member
Joined
Sep 22, 2022
Messages
3
Vehicle(s)
2000 fd3s rx7, 2016 levorg
Hi first post but wanted to leave a warning for anyone else.

I have owned my 2016 levorg since new and it was stock and has never had the undertrays taken off until last week.
My car developed a rattle and engine cut at 4500rpm under boost
no cel
oil change 4 months ago
First thing I looked and replaced at was the fuel pump and filter. no fix.
Next was air filter and spark plugs. No fix.
Next upper intake clean. No fix.
Then vacuum lines to the turbo and boost controller. No fix.
I gave up and dropped the car to Subaru, one week and 3 or 4 different guesses at the issue and $400 later.
Turns out one of the exhaust manifold bolts had backed off and fell out, this under load was knocking on the engine and causing the ecu to knock cut and cut power with the trans. The rattle that I could hear was apparently the the gearbox trying to keep the engine out of the knock range.
 
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