Timing Chain .....too much play?

[High_Octane]

I have a 1996 Q45. While I was changing the valve cover gasket on the right side, I noticed more play in the timing chain "tc" then I would have expected. I am not sure what is an acceptable amount of deflection in the tc between the camshaft cog wheels. In the attached picture you can see the tc with 1/3 of an inch between the chain and the guide. Is this normal or acceptable for a Q45 with 150K miles. I removed the valve cover and top timing chain cover and visually inspected the guides. I did not notice any significant wear and the tensioner seems to be working. The tc appears tight on the left side.

[maxnix]

That's normal, but your engine could use some BG Quick Clean on your next change, an Envirolution engine flush, or a regimen of high detergent oil with frequent changes, or all three.

[High_Octane]

Thanks Brian! Great Advice!

Yes, the picture shows just how dirty things are inside my engine.

Where can I get BG Quick Clean?

Is an "Envirolution engine flush" something that is done in a repair shop...... or is a product that I can purchase?

Any recommendations on oil usage? I recently started using Castrol Fully Sythetic 5W-30. I have been changing the oil every 4-5K miles. Should I change it more often and/or use another oil after doing the BG Quick Clean.

[5zigen]

BG Quickclean can be purchased at http://www.everythinginfiniti.com

I believe Envirolution Engine Flush is something that can be done at a shop.

And last of all, yes, you should start doing 3k oil changes with Mobil 1 especially with an engine as dirty as yours

[maxnix]

1.) Where can I get BG Quick Clean?

2.) Is an "Envirolution engine flush" something that is done in a repair shop...... or is a product that I can purchase?

1.) If Joe doesn't have it, try Ryno Performance Products http://www.ec-securehost.com/R....html or even eBay.

2.) It is a service. http://www.envirolution.com

Call Tom Mackin to find a shop near you.

(253) 639-1589 Office

(206) 550-2914 Cell

[email protected]

[Q45denver]

BG has a similiar machine flush as well as a new DIY purge.

http://www.bgprod.com/products/engineoil.html

[squeefoo]

Yes dirty... I'm not sure about a '96 but with no oil pressure there will be slack.

You don't have VVT, so I don't know if this is a huge difference from '90 up.