02 blazer LS 4.3

Asked by Jun 05, 2017 at 07:29 PM about the 2002 Chevrolet Blazer 4 Door LS

Question type: Maintenance & Repair

My blazer was running fine went on
vacation for 4 days and came back
Friday night got in it and it would not
crank it tried but never cranked pulled
the coil wire off and it was sparking
Orange I'm not know mechanic so any
help would be great I did change the
crank sensor but that didn't help

9 Answers

510

Check and see if wires are firing off cap. Possibly got moisture in cap. If have access to scan tool. See if you have any codes. If you can pull distributor cap up and see if there is moisture in cap. If so change cap and rotor button. The Orange spark concerns me. You could have an issue with the ignition module. Its mounted right beside coil

Just changed the cap and rotor button wires and plugs ignition module I did not change I will change it and if that don't work I will get back to you thanks so much

510

Check fuel pressure too

73,055

You have a weak coil. The spark should be white, blueish is color. A orange spark is a weak spark. You can have the coil tested at an auto parts store. Fuel pressure has nothing to do with the spark.

510

Nobody said fuel pressure did rowefast. Just asked him to check It.

I just changed the coil and the module last night it still want crank it's got good fuel pressure

73,055

Fuel pressure would be an issue, but an orange spark was not good either. So verify the fuel pressure at the Schrader Valve up on the intake manifold with a fuel pressure gauge. It should be 56 to 63 lbs. Turn the key to the on position and let the fuel pressure build up, then let it sit. Fuel pressure should not drop more than 5 lbs. in 3 minutes. If it does then the spider injection assembly would need to be changed out. This is a common problem. Test and see what is going on with the fuel pressure. Should change out the fuel filter first for most accurate readings.

510

Need to verify fuel pressure and do need to be able to scan engine for codes. If pressure ok. Spray some carb cleaner in intake and see if it will crank

The only code it had was the crank sensor and I changed it I will check the fuel pressure with a Gage and see thank y'all so much for helping me with this I pray that god will bless y'all in whatever y'all need

Your Answer

Blazer

Looking for a Used Blazer in your area?

CarGurus has 14 nationwide Blazer listings starting at $1,750.

Postal Code:

Chevrolet Blazer Experts

  • #1
    Andrew Olsen
    Reputation
    2,030
  • #2
    yetilikesbeer
    Reputation
    1,330
  • #3
    Rowefast
    Reputation
    1,030
View All

Related Models For Sale

Used Chevrolet TrailBlazer
5 Great Deals out of 49 listings starting at $700
Used Chevrolet Tahoe
6 Great Deals out of 632 listings starting at $6,871
Used Chevrolet S-10
13 listings starting at $3,800
Used Chevrolet Silverado 1500
162 Great Deals out of 10,662 listings starting at $100
Used GMC Jimmy
15 listings starting at $2,480
Used Chevrolet Camaro
796 listings starting at $10,000
Used Ford Explorer
45 Great Deals out of 1,364 listings starting at $3,900
Used Jeep Grand Cherokee
108 Great Deals out of 2,738 listings starting at $1,871
Used Ford F-150
459 Great Deals out of 9,063 listings starting at $922
Used Jeep Cherokee
119 Great Deals out of 6,246 listings starting at $11,990
Used Jeep Wrangler
91 Great Deals out of 1,586 listings starting at $2,488

Used Cars For Sale

2005 Chevrolet Blazer For Sale
8 listings starting at $1,750

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.