99 Honda Civic dx Exhaust manifold glowing red

Reply Subscribe

Thread Tools

Search this Thread

Sep 30, 2020

drleon0408

Thread Starter

Registered!!

Joined: Sep 2020

Posts: 1

Likes: 0

Rep Power: 0

drleon0408 is an unknown quantity at this point

99 Honda Civic dx Exhaust manifold glowing red

Exhaust manifold glowing red, changed the header and cat, still doing it! Time if seems right please help

Oct 4, 2020

Wankenstein

OF top 99.5% creator (Formerly of the Puffinblunts variety)

Joined: May 2012

Posts: 3,634

Likes: 109

Rep Power: 210

Re: 99 Honda Civic dx Exhaust manifold glowing red

Quote:

Originally Posted by drleon0408

Exhaust manifold glowing red, changed the header and cat, still doing it! Time if seems right please help

Possibly needs a valve adjustment as they tighten over time/miles.

Why is my exhaust manifold glowing red?
How ever the exhaust manifolds get very hot. ... The exhaust manifold does get very hot but if it is glowing cherry red it could be a restriction in the exhaust/ restricted catalytic converter, it could be a lean air fuel mixture, or retarded ignition timing all of the above should cause a loss of power or fuel economy.