Can bad fuel injectors cause a knocking noise in your engine?

Acarlton2012
0

Asked by Acarlton2012 Dec 17, 2012 at 09:34 PM about the 1997 Chevrolet C/K 1500 Ext. Cab 6.5-ft. Bed 2WD

Question type: Maintenance & Repair

Getting a knocking noise from my engine and the diagnostic results from my mechanic is stating bad fuel injectors
causing a misfire in cylinders 4,5,8 is that possible a knocking noise could be caused by that

1 Answer

John Saffrahn
19,225

No.... A knock is generally caused by the ignition timing. An injector stuck shut causes a lean misfire which causes the engine to hesitate and loose power but not knock. An injector stuck open causes a rich mixture which will either reduce the chances of a knock or once again cause a misfire. I believe your vehicle is equipped with a knock sensor which is used to prevent knocking or pinging by electronically adjusting the timing. It sounds like the most likely issue is either the knock sensor is faulty or the ignition module inside the distributor is messed up.

Your Answer

Add photo

Related Questions

  • Tbi injector overflowing with fuel 7 answers

    Injector overflowing with fuel, recently cleaned tbi system and partially rebuilt with new o-rings and gaskets. What could be the problem?

    1990 Chevrolet C/K 1500

    -

    Maintenance & Repair

  • why would 1992 chevy pickup knock when started 9 answers

    truck has 57 thousand miles,when first start,especially when cold,it knocks...knocking sound that goes away after starting up few seconds.

    1992 Chevrolet C/K 1500

    -

    Maintenance & Repair

  • will the fuel pres reg keep fuel from inj 4 answers

    back fired changed intake inj look good no lines look bad ran fine could it be the fuel pres reg it has the spider inj

    1997 Chevrolet C/K 1500 Ext. Cab 6.5-ft. Bed 4WD

    -

    Maintenance & Repair

  • No low end power 24 answers

    I have a '97 k1500 with a 350 and 4l60e automatic. Assuming all things are OK with the truck, would a bad fuel pressure regulator cause it to have no power at low rpm's? It always bogs under acceler...

    1997 Chevrolet C/K 1500

    -

    Maintenance & Repair

  • Knock sensor 1 answer

    I have a 1993 Silverado 2wd, with the 5.7 TBI, with auto trans. My question is, I want to install a 'gear drive' timing set. Problem is, all of the gear drives I've looked at say "Not to be installe...

    1993 Chevrolet C/K 1500 Reg. Cab 6.5-ft. Bed 2WD

    -

    Car Customization

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 John Saffrahn
John Saffrahn
Reputation 1,410
#2 Andrew Olsen
Andrew Olsen
Reputation 920
#3 Jamie Groeneweg
Jamie Groeneweg
Reputation 510
View All