Oil pressure

Asked by Jan 21, 2017 at 07:12 PM about the 2007 Chevrolet Avalanche LT

Question type: Maintenance & Repair

I have a tapping noice on my 07 chevy
avalanche (and a misfire code 307 on the
same cilinder, not sure if related...)
I changed all the spark plugs and wires,
troubleshooter the coil sensor (good),
opened the head cover and flushed the
lifters and push rods with carburetor
cleaner and lubricated again. The push rod
on cilinder 7 is loose but not Brocken.
Put back together and drove; check engine
is home and truck rum smooth but tapping
noice still there, but got a message of "low
oil pressure, turn off engine!" Why is
that???
I'm planning to flush the oil tomorrow and
change oil filter. Any ideas?? I changed the
oil pressure sensor about 2 years ago

2 Answers

74,755

Ok you have a problem with #7. Either the lifter collapsed or just out of adjustment. That needs to be taken care of. Hopefully it is not a broken valve spring. This needs to be looked at by someone who knows. Thats why you are getting the po307 code......And spraying carb cleaner inside like that really is not good. You taking down all the oil for lubrication of the valves, & rocker arms.......I do not recommend a flush either. Seems to always cause more problems........On the oil pressure, there is a screen under the oil pressure sending unit that has to come out and get cleaned. This affects how the oil pressure is being read. The screen get clogged, so the oil sending unit reads low oil pressure shutting the engine down.

52,715

Broken valve spring or a lifter that is bad and has ruined the cam.

Your Answer

Chevrolet Avalanche Experts

  • #1
    Tom Demyan
    Reputation
    300
  • #2
    David Scott
    Reputation
    170
  • #3
    Oscar Leon
    Reputation
    150
View All

Related Models For Sale

Used Chevrolet Silverado 1500
182 Great Deals out of 10,619 listings starting at $1,700
Used Ford F-150
532 Great Deals out of 10,128 listings starting at $1,800
Used Chevrolet Tahoe
5 Great Deals out of 730 listings starting at $4,995
Used Cadillac Escalade EXT
14 listings starting at $10,995
Used GMC Sierra 1500
253 Great Deals out of 10,592 listings starting at $1,775
Used Dodge Ram 1500
40 Great Deals out of 516 listings starting at $2,997
Used Toyota Tundra
38 Great Deals out of 1,130 listings starting at $2,140
Used Chevrolet Colorado
19 Great Deals out of 1,560 listings starting at $1,999
Used Cadillac Escalade
5 Great Deals out of 477 listings starting at $4,000
Used GMC Yukon
11 Great Deals out of 968 listings starting at $2,500
Used Chevrolet Suburban
4 Great Deals out of 438 listings starting at $2,871
Used Honda Ridgeline
15 Great Deals out of 420 listings starting at $5,500
Used Toyota Tacoma
39 Great Deals out of 1,019 listings starting at $5,850
Used Dodge Charger
58 Great Deals out of 776 listings starting at $2,000

Used Cars For Sale

2013 Chevrolet Avalanche For Sale
33 listings starting at $16,990
2012 Chevrolet Avalanche For Sale
28 listings starting at $19,500
2011 Chevrolet Avalanche For Sale
27 listings starting at $14,883
2010 Chevrolet Avalanche For Sale
13 listings starting at $19,190
2009 Chevrolet Avalanche For Sale
8 listings starting at $15,495

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.