[69Roadster]

It is barely running. It surges when it idles, won't run above 3500 rpm, looks like gas is coming out the tail pipe, and dies anytime I let off the gas when driving. I mixed leaded 110 ocatane in it at the track last night along with my 93 ocatane. The car started acting like I described after a few runs. Could I have toated the oxygen sensor? Could it be anything else? Thanks.

 

[dzeiler]

check you IC hoses many problems like the above can be tracked back ot a blown or leaking ic hose

 

[Guest]

yup, sounds like a pipe has poped. when the car boost leak, it will run extremely rich.

 

[69Roadster]

Thanks for the input. I'll check the IC hoses. Is there a place where they typically go bad? Will it more likely be a hole in the hose or a loose clamp?

 

[mkivmatt]

Most the time it will be the hoses popping off a connector. Not a hole. Check the ones in the engine that you can see first. It might be the one leading into the intake manifold, if it's not the upper connection than check the lower, right at the bottom of the battery. If that one and the one on the turbo side are both on secure then it's time to get out the jack. This is where the fun begins. You have to jack up the car and take off those nice covers on the bottom of the car, theres about 50 million screws in each one, so have fun.

Matt

 

[69Roadster]

You guys were right :bthumb:.
It was the hose on the intake side, the connection even with the bottom of the battery. That sucker wasn't loose it popped completely off. Didn't think that was possible.

Any chance I hurt anything running the car so rich? I'm thinking I should at least change the plugs.

 

[Guest]

You guys were right :bthumb:.
It was the hose on the intake side, the connection even with the bottom of the battery. That sucker wasn't loose it popped completely off. Didn't think that was possible.

Any chance I hurt anything running the car so rich? I'm thinking I should at least change the plugs.

That's a common problem on our cars.

Change your plugs as a precaution. They're cheap and probably fouled.

Also, attach a scan tool or a digital scope and look at your front O2 sensor's rise and fall time. Your O2 sensor may now have a coating of carbon on it that's preventing it from doing its job. Sometimes you can clean the carbon off or burn it off with a propane torch; since new ones cost $100 and they're a pain in the ass to replace, it definitely worth it to inspect the output first.

 

[theman]

Yeah changing out the plugs is cheap as long as you use NGK 3330 instead of the stock replacements...