cylinder 8 miss fire

5

Asked by Jan 07, 2017 at 06:17 PM about the 2005 Dodge Ram 1500 SLT Quad Cab SB 4WD

Question type: Maintenance & Repair

I have an 05 ram 1500 5.7 hemi I have a miss on
cylinder 8 changed injector and coil swapped plugs  
did injector pulse test with scanner checked spark
checked compression it's 125-130 psi still missing
any ideas

3 Answers

73,775

Looks like you have covered what they say to do except that there may be an intake leak. Look for any type of vacuum leak, and try snugging up the intake bolts. One other thing is what is the compression in other cylinders? Between all the cylinders they say compression should not vary more that 15% from between the cylinders. If it does then it sounds like a miss.

1 of 1 people found this helpful.
52,085

What was compression on the other cylinders? The 125 to 130 reading may be a little low. Is there any ticking at the valve cover on that side of the engine. Have you checked to see if the push rod is bent or if the valve spring is broken?

1 of 1 people found this helpful.
70,285

I agree on the compression. Around 150 PSI or higher is usually about normal. 125-130 PSI sounds low to me. HTH. -Jim

1 of 1 people found this helpful.

Your Answer

Ram 1500

Looking for a Used Ram 1500 in your area?

CarGurus has 536 nationwide Ram 1500 listings starting at $1,300.

Postal Code:

Dodge Ram 1500 Experts

  • #1
    Dan Connell
    Reputation
    6,460
  • #2
    pudgybear
    Reputation
    6,260
  • #3
    dandyoun
    Reputation
    5,700
View All

Related Models For Sale

Used Ford F-150
472 Great Deals out of 10,109 listings starting at $3,450
Used Chevrolet Silverado 1500
179 Great Deals out of 11,110 listings starting at $999
Used Dodge Ram 2500
8 Great Deals out of 94 listings starting at $1,995
Used GMC Sierra 1500
266 Great Deals out of 10,821 listings starting at $2,995
Used Toyota Tundra
31 Great Deals out of 939 listings starting at $2,500
Used Toyota Tacoma
40 Great Deals out of 879 listings starting at $5,990
Used Ford F-250 Super Duty
22 Great Deals out of 891 listings starting at $6,800
Used Dodge Charger
62 Great Deals out of 771 listings starting at $2,000
Used Nissan Titan
16 Great Deals out of 571 listings starting at $4,950
Used Dodge Dakota
9 Great Deals out of 160 listings starting at $2,900
Used Chevrolet Colorado
20 Great Deals out of 1,508 listings starting at $3,950
Used Dodge Ram 3500
72 listings starting at $8,995
Used Ford Mustang
8 Great Deals out of 1,120 listings starting at $1,250

Used Cars For Sale

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.