93´ Vortec CPI W Blazer fro dummies, needed¡

Hi, everyone:
Last week I had some problems with my truck, after repair a fuel line inside the plenum on my 93 4x4 Vortec vin W, actually don´t has power, accell is bad, idle sounds if like a piston misses, and running at 50 MPH sound like a motorcycle , it´s works really bad, after repair stuff changed are: cap and rotor, ignition coil, spark plugs and wires, oil and filter, fuel and air filter.
I cleaned the plenum, EGR valve, PCV, has too many carbon.
Truck start Ok, doesnt´s dies at drive and brake action, no SES ligth. Please help me with some things to do and check before view my mechanic and pay his Vacations at Las Vegas this year. Thanks

Catalytic Convertor is destroyed if your exhaust smells like sulphur or rotten eggs.

You probably melted the internal substrate when you had the internal fuel leak. The fuel will go into the exhaust and into the cat where is will burn and melt everythign inside creating a practically solid and un passible mess.

Definitely time for the new cat.

I had a similar problem on a 93 S-10 Vortec CPI. My gas milage went into the toilet. I averaged approx. 330 miles to a tank, and suddenly dropped to 220 miles per tank. The problem was the CPI, the fuel was leaking inside the plenum. I had it fixed at a garage and 1 year later it did the same thing again. (The poor performance and terrible gas milage is a dead give-away) Luckily, the garage honored their warranty and fixed the leak a 2nd time. After that, it hasn't given me any trouble.

yea, he has already checked and that is where he fixed the leaky line already. His CPI is not leaking.

The sulphur smell from the exhaust is a dead giveaway for a bad cat.

I don't see where he mentions a sulphur smell. All I know is that it is possibly still leaking as the symptoms sound the same.

I don't see where he mentions a sulphur smell. All I know is that it is possibly still leaking as the symptoms sound the same.

Rick,

I am sorry about that, I have been talking to this guy via PM to get the problems solved and he told me this through our troubleshooting.

The plugged cat will also cause the grown like a motorcycle at 50mph.

No Problem LT. I have owned 4 different S-10 Blazers, an 89, 93, 2001, and a 2000 Jimmy, and have fixed most of their problems myself. I am just trying to help if and where I can.

Thanks for all you do. Keep up the good work.

Oh, please don't think I don't appreciate your advice.

Was just a information mixup.

All is good and let's combine our knowledge to get this guy up and running again.

Hi All:
My Blazer is finally Ok, I change the cat, adjust time to 4 degrees in advance, change rotor again and everything is Ok, smoke, gas miliage, smell,etc, Tanks a lot Speciall BlazerLT. Keep on it. if anybody needsmore info, don´t hesitate to contact to me.

congrats!

Hi All:
My Blazer is finally Ok, I change the cat, adjust time to 4 degrees in advance, change rotor again and everything is Ok, smoke, gas miliage, smell,etc, Tanks a lot Speciall BlazerLT. Keep on it. if anybody needsmore info, don´t hesitate to contact to me.

Awesome bud, the clogged cat was really hurting you.

Glad you are back up and running and it was a pleasure helping you.

This thread is closed, just I want to share what i found repairing my CPI 93´ Vortec,

http://files.automotiveforums.com/gallery/watermark.php?file=/503/154478DSC00840.jpg

http://files.automotiveforums.com/gallery/watermark.php?file=/503/154478DSC00882.jpg

Oh my god!

That is horrible! Look at all that fuel in the driver's side. You are SOOOO lucky you didn't hydrolock the motor.

That for sure is the reason why you cat was cooked. All the excess fuel was going to your cat where it was burning and melting the substrate.