Rough Idle/Stalling

Connor Hoy

Asked by Jan 21, 2016 at 09:24 PM about the 1993 Chevrolet C/K 1500 Silverado Standard Cab SB 4WD

Question type: Maintenance & Repair


Hey I've got a 93 K1500 5.0 V8. Started idling rough about a week ago,
would sometimes stall at stop lights. RPM would drop as low as 500.
Replaced the fuel filter at the suggestion of a knowledgeable friend, didnt
solve the problem.

Two days ago I had a no start situation. Engine would crank, but no start.
Fuel pump seems to be working. When put into accessory mode the FP
relay clicks, the fuel pump can be heard humming through the gas cap.

Today It managed to start. But it only runs for about a minute before she
dies. There's what I think is blue smoke. Its rich smelling, almost sweet?
Checked the spark plugs, and there's oil on them. Am I trending in the right
direction? Is this a situation that can be rectified by replacing seals and all
spark plugs?

Bear in mind I'm quite green to all things automotive, I hope y'all can bear
with me so I can get my baby back on the road.


4 Answers


Oil on plugs is not good. How many miles on the engine? The sweet smell makes me wonder if you are getting coolant into the engine via a bad head gasket.

1 out of 1 people think this is helpful.
Connor Hoy

245k, around 152,000 miles


Check to see if you are getting water in the engine oil or oil in the coolant. If the truck has white smoke when running the problem could be a leaking head gasket.

Connor Hoy

Yep, white/grey smoke. There seems to be coolant in the oil, but its a little tough to tell since the coolant is a bit old.

Your Answer

Add photo

Related Questions

  • Idleing rough 2 answers

    I have 1999 chevy silverado with 5.7. Motor runs smooth until you come to a stop. The idle drops to barely running and is rough. Take off and runs well. Why is it running rough at a stop

    1999 Chevrolet C/K 1500 LS 4WD


    Maintenance & Repair

  • Drop in Idle and/or stall when gas released 5 answers

    I have been working on our 89 Chevy K1500 and am still having an idle issue. The truck idle drops and lopes and occasionally completely stalls. This usually happens when driving slow in town... backi...

    1989 Chevrolet C/K 1500


    Maintenance & Repair

  • check engine light toruble, rough idle 2 answers

    I have a 98 chevy c1500 and the check engine light is on I took it to a shop and they scaned the code and it said it was the cam and crank shaft position sensor. so I replaced both of them now the l...

    1998 Chevrolet C/K 1500 Cheyenne Extended Cab SB


    Maintenance & Repair

  • 97 Chevy C1500 idles great, runs rough when put in gear 10 answers

    I've got a '97 C1500 that's been running great for me for the past 6 months. Just the other day I drove it down to my folks place and when I pulled in the driveway the engine started running rough. ...

    1997 Chevrolet C/K 1500 Cheyenne Standard Cab Stepside SB 4WD


    Maintenance & Repair

  • Rough idle, stalling, shifting hard 2 answers

    I have a 2002 cavalier. The traction off light come on, had a rough idle, when accelerating quickly rpm would increase and the transmission wouldn't shift (but accelerating slowly it shift fine)....

    2002 Chevrolet Cavalier Base Coupe


    Maintenance & Repair

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 1,150 nationwide C/K 1500 listings starting at $2,400.


Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,570
#2 John Saffrahn
John Saffrahn
Reputation 2,260
#3 Rowefast
Reputation 1,190
View All

Related Models For Sale

Used GMC Sierra 1500"
1,045 Great Deals out of 56,526 listings starting at $2,300
Used Ford F-150"
3,259 Great Deals out of 217,203 listings starting at $1,000
Used Chevrolet C/K 2500"
288 listings starting at $1,995
Used Dodge Ram 1500"
528 Great Deals out of 13,942 listings starting at $995
Used Chevrolet S-10"
9 Great Deals out of 1,809 listings starting at $1,749
Used Chevrolet C/K 3500"
309 listings starting at $5,600
Used Chevrolet Camaro"
826 Great Deals out of 39,073 listings starting at $2,650