98 GMC 4.3 v6. Cranks but won't start even if I spray gas in throttle body. I'm guessing spark issue but would like some tips before I work on after work. Any suggestions?

Asked by Mar 16, 2017 at 05:21 PM about the 1998 GMC Sierra 1500 C1500 SL Standard Cab Stepside SB

Question type: Maintenance & Repair

1 Answer

87,195

Yes, probably have no spark. First thing to do is to see if you can spin the rotor. It should not spin. Then check the cap and rotor for carbon tracks & cracks. The rotor would have a burn mark underneath in the center. Make sure the spark plug wires are in good shape. If you want to test any with a digital multi meter then it is 8000Ω per foot. If your not seeing anything obvious, then take the coil and the ignition control module to an auto parts store and have them tested. One other thing is it is possible the crankshaft sensor could be bad.

Your Answer:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,640
  • #2
    John Saffrahn
    Reputation
    4,030
  • #3
    Glenn Clingenpeel
    Reputation
    3,800
View All

Related Models For Sale

Used Chevrolet Silverado 1500
106 Great Deals out of 11,112 listings starting at $4,950
Used Ford F-150
129 Great Deals out of 11,395 listings starting at $1,995
Used Chevrolet Silverado 2500HD
9 Great Deals out of 1,130 listings starting at $4,495
Used Dodge Ram 1500
30 Great Deals out of 523 listings starting at $4,300
Used Toyota Tacoma
15 Great Deals out of 1,757 listings starting at $6,413
Used Chevrolet Tahoe
11 Great Deals out of 782 listings starting at $5,900
Used Ford F-250 Super Duty
21 Great Deals out of 794 listings starting at $1,500
Used GMC Yukon
16 Great Deals out of 1,049 listings starting at $5,500
Used Chevrolet Camaro
10 Great Deals out of 932 listings starting at $11,500
Used Jeep Grand Cherokee
68 Great Deals out of 5,338 listings starting at $2,994

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
21 Great Deals out of 8,202 listings starting at $26,275
2017 GMC Sierra 1500 For Sale
6 Great Deals out of 366 listings starting at $25,708
2016 GMC Sierra 1500 For Sale
17 Great Deals out of 363 listings starting at $20,750
2015 GMC Sierra 1500 For Sale
6 Great Deals out of 454 listings starting at $19,990

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.