4M performance

5

Asked by Dec 01, 2010 at 11:10 AM about the 1979 Toyota Cressida

Question type: Maintenance & Repair

I recently bought a 79 Cressie from San Diego and drove it back to Albuquerque.  
Power was lacking and fuel economy was worse (13mpg).  After connecting a few
vacuum lines and a tune up, there's only a slight improvement.  At 57K original
miles it is a looker, but I know it isn't up to the 115 HP it should have.  Heck, it
won't even rev past 4400 rpm  and at that there's NO power. Any ideas?

5 Answers

185

sounds to me like the carb might be out of tune, or the timing is off. It is a carb on these cars right? I can't remember, if it's fuel injected it might be gummed up injectors, or for that matter it could be a clogged fuel filter be it carbed or injected, sorry I couldn't be of more help

5

Thanks for the response, Charlie. The carb is clean and working well with proper level and no manifold leaks and the fuel filter is brand new. PCV system is fnctioningto specs and the emission system components I've checked so far are all good. What do you think about perhaps a restricted catalytic converter? Is there a test, or should I just remove and inspect. That seems to be a good reason it won't rev past 4400 rpm. Thanks again for the input

185

It can't hurt to take out the cat, I'd give that a shot

5

I had the cat removed and it was LOADED with carbon. Even the muffler was loaded. replaced both and power is better, but still not great. It seems to be running quite rich. The insulators on the plugs are a nice beige color, but the electrodes are black and sooty. Maybe it's the carb. Passed emissions, though. Will post more as I learn more.

185

Awesome, feedback rocks. Thank you

Your Answer

Add photo

Related Questions

Cressida

Looking for a Used Cressida in your area?

CarGurus has 2 nationwide Cressida listings and the tools to find you a great deal.

ZIP:

Search Toyota Cressida Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Toyota Cressida Experts

#1 carGrrl
carGrrl
Reputation 100
#2 Russell Cook
Russell Cook
Reputation 90
#2 littlehorn
littlehorn
Reputation 90
View All

Related Models For Sale

Used Toyota Supra
42 listings
Used Toyota Corolla
1,001 Great Deals out of 69,051 listings starting at $1,595
Used Toyota Celica
9 Great Deals out of 404 listings starting at $1,500
Used BMW 3 Series
1,558 Great Deals out of 39,015 listings starting at $1,200
Used Toyota Land Cruiser
19 Great Deals out of 1,200 listings starting at $4,095
Used BMW 5 Series
632 Great Deals out of 15,459 listings starting at $2,495