dual overhead cams rebuilt heads

95

Asked by Aug 07, 2017 at 06:34 PM about the 2001 Volkswagen Passat GLS V6

Question type: Maintenance & Repair

From the point I took the apart and when i put them back together, during that time they were moved. So the cams were mixed up. Yes I marked them. What I didn't do was mark the heads. So they are together and on the block. I am trying to set the timing. The cams are locked into position and I am attempting to set TDC on crank shaft. I rotate the crank and get about 2/3 the way and stopped. Wont go any farther. Rotate counter lock, goes all the way back to the same position and stopped. So I take it all back off except heads to see whats up. Whats happening is piston is rising up and cant continue because its stopped by valve heads that are open about halfway because the camshaft gear locking tool has them sitting. Is this correct. Am I suppose to set TDC piston first and then the camshaft key locking tool to set cams perfectly. Because the book I have says completely opposite. Set cams with tool, leaving gears slightly loose to rotate as you set crankshaft to timing marks. Thus camgears will rotate then once timing marks are aligned torque down gears setting timing perfect. So why does one of the pistons keep it from rotating especially if I need to rotate another 360 to reach compression stroke instead of exhaust. Could the cams have gotten mixed up in regards to the heads they needed to be installed in. Because when I pulled heads valves were not sticking out from bottom of head. And started to install cams in wrong heads and the valve stems were sticking so far out that they would have gotten bent. Realized that and switched cams around. Now I am stuck and need to finish this car. Dont want to end up trashing pistons or valves or the whole engine completely

No answers yet

Your Answer

Volkswagen Passat Experts

  • #1
    tenspeed
    Reputation
    1,360
  • #2
    Tom Demyan
    Reputation
    1,280
  • #3
    Chrisand Edwards
    Reputation
    1,240
View All

Related Models For Sale

Used Volkswagen Jetta
83 Great Deals out of 1,994 listings starting at $1,800
Used Honda Accord
78 Great Deals out of 916 listings starting at $1,411
Used Toyota Camry
90 Great Deals out of 2,242 listings starting at $1,781
Used BMW 3 Series
152 Great Deals out of 1,780 listings starting at $2,584
Used Audi A4
37 Great Deals out of 561 listings starting at $3,995
Used Nissan Altima
85 Great Deals out of 1,415 listings starting at $1,785
Used Honda Civic
302 Great Deals out of 3,147 listings starting at $995
Used Hyundai Sonata
42 Great Deals out of 1,403 listings starting at $1,490
Used Volkswagen GTI
30 Great Deals out of 187 listings starting at $3,995
Used Volkswagen Golf
53 Great Deals out of 892 listings starting at $2,478
Used Mercedes-Benz C-Class
133 Great Deals out of 1,370 listings starting at $3,000

Used Cars For Sale

2017 Volkswagen Passat For Sale
153 listings starting at $17,700
2016 Volkswagen Passat For Sale
56 listings starting at $15,998
2015 Volkswagen Passat For Sale
7 Great Deals out of 82 listings starting at $14,500
2014 Volkswagen Passat For Sale
57 listings starting at $11,999
2013 Volkswagen Passat For Sale
7 Great Deals out of 77 listings starting at $8,995

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.