Ok so I know it isn't a truck or SUV, but the motor is closely related to those in our trucks and SUVs. I picked up a carburated 89 corolla dirt cheap, but it has almost no power. It's a 1.6L, DOHC, 16v, 2BL. It starts up and idles fine, but only works with like 10% throttle or less. If you give it any more it chokes. While idling, if you rev it up fast you can sometimes hear a backfire. Any ideas what could cause this?


Here's what I've done so far
-I checked the cam timing and that was fine.
-Ignition timing is dead on
-I bypassed the fuel filter and it was exactly the same, so that's fine
-I checked the mechanical fuel pump with the directions giving here http://www.autozone.com/az/cds/en_us...rInfoPages.htm and it passed those tests.
-185-190PSI compression in each cylinder

I thought the engine wasn't getting fuel, but the filter seems to work and so does the pump. Or is it possible the pump works, just it doesn't supply enough fuel? This is the first carburated car I've worked with so I've been checking everything around it with no luck. Any ideas? Thanks


Patrick
86 4runner

 

I've got an '88 Nova which has the same engine as a '87 Corolla, with the carb.

I'd check your intake manifold for deposits. If you've got blockage, that would cause a similar problem. I think you're going to have to remove the head to clean it up, otherwise that stuff will drop into the engine.

Good luck.

 

I'll pull it off and check it out. Oh and I forgot to mention that it sat for 7 months without being started before I got it.

Patrick
86 4runner

 

maby bad gass, my partner had the same problem.

 

I would do a seafoam treatment on it.

 

The first thing I did when I got the car was fill it with new gas.


Good Idea, I'll give it a try and hope it works one of it's miricales.

 

If your feeling lucky swap in a Hi-compression JDM red top 4A-GE, or maybe even a 20V silvertop

 

haha, I don't feel like doing that much work. I already don't have enough money to buy parts for my 4runner and Civic, there's no way I could have 3 project cars.

 

Maybe the guys at www.club4ag.com can help you out

 

Choke?