When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hopefully I'm posting in the proper area. I have a 2008 F150 XL 4.2L V6. I need to get cylinder one on compression stroke to TDC. On the outside of the harmonic balancer it have several marks that I believe to be for timing and a well hidden TDC arrow on the block. There's also a dot of blue paint near the timing marks. Are these actually timing marks and if so, how do I know which mark is TDC? Does the blue paint point to the mark I need? I've attached some pictures. Also wondering what the 172 and 3M7 marks are representing? Thank you!
Timing marks TDC mark on block
Last edited by MuffinMan; 04-03-2018 at 12:54 PM.
Reason: More questions, bump
03-31-2018, 10:41 AM
Help Finding TDC
