My 73 starts to spit & stutter when going over 50 mph, it almost shuts down and backfires a litte. Runs fine under 50 mph. Help?

slackbo
0

Asked by slackbo Dec 09, 2006 at 02:04 PM about the 1973 Chevrolet Corvette

Question type: Maintenance & Repair

I just bought this car. I got on the freeway and it started to spit & stutter, and just stopped running. I would pull over and it would start right up and as soon as I hit abput 50 mph the same thing. I changed the fuel filter which was old & dirty, and the air filter which was the same. Sprayed the carb with carb cleaner & tried it again. It runs great under 50 mph but doesn't want to keep running past that.
Thanks in advance.

4 Answers

lightGear
22,985

The most common reason for sputtering or backfiring is spark plug wires shorting out, electrical wire shorting out, or water in the fuel tank. http://ezinearticles.com/?Does-Your-Car-Engine-Backfire?&id=2855 That webpage should help you in trying to diagnose the problem.

CBW
0

This could well be your fuel pump. If the pump is starting to fail, it will not deliver enout fuel at sustained higher speeds - and the car behaves as if out of gas (the engine is effectively running out of gas) - but runs normally otherwise. The fuel pump's performance can be evaluated by measuring its output/time - but you'll have to locate the acceptable spec.

Anonymous
0

did u change filter in carb try that big joe from pitts

Anonymous
0

fuel pump or filter by carb or maybe carb float level to low or bad coil

Your Answer

Add photo

Related Questions

Corvette
Looking for a Used Corvette in your area?
CarGurus has 10,534 nationwide Corvette listings starting at $2,500.
ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 carGrrl
carGrrl
Reputation 990
#2 califcarson
califcarson
Reputation 970
#3 Tom Demyan
Tom Demyan
Reputation 850
View All

Related Models For Sale

Used Chevrolet Camaro"
479 Great Deals out of 35,305 listings starting at $1,595
Used Ford Mustang"
714 Great Deals out of 35,456 listings starting at $1,950
Used Dodge Challenger"
242 Great Deals out of 17,016 listings starting at $13,500
Used Porsche 911"
176 Great Deals out of 3,585 listings starting at $12,000
Used Dodge Charger"
562 Great Deals out of 26,149 listings starting at $3,900
Used Mercedes-Benz SL-Class"
132 Great Deals out of 2,620 listings starting at $3,950

Used Cars For Sale

2015 Chevrolet Corvette For Sale
10 Great Deals out of 3,109 listings starting at $53,500
2014 Chevrolet Corvette For Sale
44 Great Deals out of 905 listings starting at $49,888
2013 Chevrolet Corvette For Sale
22 Great Deals out of 394 listings starting at $31,499
2012 Chevrolet Corvette For Sale
18 Great Deals out of 316 listings starting at $32,750
2011 Chevrolet Corvette For Sale
15 Great Deals out of 302 listings starting at $26,987