93 chevy engine lopes

10

Asked by Sep 22, 2014 at 02:53 PM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

93 chevy pickup 350 eng. lopes really bad, new plugs, wires, distributer cap and rotor button also changed fuel filter. Any suggestions?

5 Answers

11,855

Define "lopes". What I think of when I hear "lopes" is a big cam at idle is a rough idle due to a big cam grind.

10

Yes lopes like an engine with a really big cam except this engine is bone stock. It is really bad at 5-10 mph, you can still feel it a little at highway speeds. I could record the sound and send to you if you have contact info I could send a video to.

11,855

Check idle RPMs and timing. Your idle or timing may be retarding by the computer due to a bad air/fuel mix. If you can hook it up to a reading machine, see what the charts are telling you on the air/fuel mix. When was the fuel filters changed last? Have you had the fuel delivery system flushed out or worked on? Maybe the hot rod fairy dropped in a big cam over night?

10

It idles fine it only starts lopeing when you start off slowly. If you hit the gas hard from a stop you don't notice anything much until you level off at cruising speed. I changed the fuel filter a couple of months ago, have not had anything done to the fuel system/TBI.

1 out of 1 people think this is helpful.
10

My GMC 1993 truck(350 Engine) is fixed. Same symptoms as yours, would start, idle, and accelerate fine, but at any cruising speed it would lope or act like it was not firing on all 8. Turned out it was the EGR (exhaust gas recirculation) valve.

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 151,930 nationwide Silverado 1500 listings starting at $1,500.

ZIP:

Search Chevrolet Silverado 1500 Questions

UK Questions

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

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 1,760
#2 Silverado_owner_2006
Silverado_owner_2006
Reputation 1,500
#3 tenspeed
tenspeed
Reputation 1,430
View All

Related Models For Sale

Used GMC Sierra 1500
1,000 Great Deals out of 60,141 listings starting at $1,299
Used Ford F-150
3,077 Great Deals out of 208,274 listings starting at $1,200
Used Dodge Ram 1500
532 Great Deals out of 13,075 listings starting at $1,800
Used Chevrolet Silverado 2500HD
401 Great Deals out of 27,284 listings starting at $2,998
Used Toyota Tundra
683 Great Deals out of 28,145 listings starting at $2,798
Used Toyota Tacoma
728 Great Deals out of 31,912 listings starting at $2,750
Used Chevrolet Tahoe
882 Great Deals out of 28,086 listings starting at $1,700
Used Ram 1500
1,314 Great Deals out of 115,471 listings starting at $6,500
Used Chevrolet Colorado
313 Great Deals out of 17,875 listings starting at $1,995
Used Chevrolet Camaro
443 Great Deals out of 40,684 listings starting at $3,500
Used Ford F-250 Super Duty
463 Great Deals out of 43,219 listings starting at $2,195
Used Chevrolet Silverado 1500HD
15 Great Deals out of 312 listings starting at $4,988
Used Chevrolet Silverado 2500
7 Great Deals out of 284 listings starting at $3,995
Used Chevrolet Avalanche
239 Great Deals out of 5,829 listings starting at $2,400
Used Chevrolet C/K 1500
1,072 listings starting at $1,250