90 Towncar Glowing Manifolds

[gs_jim]

I have a question ? I have a 1990 Towncar with you know the 320/5.0 engine. The question is what makes the exhaust manifolds glow ? I was thinking the cats but is there a chance that both sides are bad as both sides of the manifolds glow ? Would one side make both glow ? Please let me know...

 

[Dereck]

Hi Gs Jim

I have a question ? I have a 1990 Towncar with you know the 320/5.0 engine. The question is what makes the exhaust manifolds glow ? I was thinking the cats but is there a chance that both sides are bad as both sides of the manifolds glow ? Would one side make both glow ? Please let me know...

Faulty thermactor system maybe, first job is to whip out the code reader and check for stored fault codes in the PCM.

Regards

Dereck

 

[brentalan]

That could be indicitive of a lean condition. I would also check your spark plugs for color/damage.

 

[gs_jim]

The plugs are new. The other i forgot to mention is the car is weak at takeoffs also.

 

[gs_jim]

Think i got it. Timing was way off and fried plug wires...

 

[pepperman]

:W to :V

 

[CaptainZilog]

Rule of thumb:

Manifold/headers glow - lean
Cats glow - rich

 

[Bizw0z UK]

Rule of thumb:

Manifold/headers glow - lean
Cats glow - rich

Nothing glows -yer battery is flat.