Finaly fixed the dry start up knock
JK Newbie
Joined: Jul 2010
Posts: 15
Likes: 0
From: Vancouver
I'll just chime in and say my jk has 70,000 on it..it does burn about 1 quart every 3000...I've never had a startup knock but I've always used purple..5-30 since I bought it with about 55,000 miles on it, and i switched over that same weekend. Also I have always used wix filters.
Holding the pedal to the floor for a few seconds during cranking will not start the Jeep as soon and will help prime the system if you are having start up knock, I know its not the ideal fix but its better that that no lube momentarily in freezing temps!
Holding the pedal to the floor for a few seconds during cranking will not start the Jeep as soon and will help prime the system if you are having start up knock, I know its not the ideal fix but its better that that no lube momentarily in freezing temps!
JK Enthusiast
Joined: Aug 2011
Posts: 436
Likes: 0
From: Lima, ny
Originally Posted by Stillmotion
where are you buying from?
linkie link?
linkie link?
The downside is it isn't cheap...you can get better pricing if you buy by the case but if you walk into an auto parts dealer its just under 10 bucks a quart
JK Enthusiast
Joined: Aug 2011
Posts: 436
Likes: 0
From: Lima, ny
Originally Posted by Roadrash
How does this prime the system? What are you talking about?
JK Enthusiast
Joined: Aug 2011
Posts: 166
Likes: 0
From: Hawthorne, NV
Great news! Like the OP, i have spent about $150 in oil and filters trying to find that magical combo to cure cold start knock. I know mine is not ABD valve related, because i have spun my filters off before starting and they are full. I think it is a combo of viscosity and filter flow performance.
Looking forward to going purple!
Looking forward to going purple!
JK Enthusiast
Joined: Aug 2011
Posts: 166
Likes: 0
From: Hawthorne, NV
I think what he means is that by holding down the pedal while cranking, it will not fire right away(computer prevents it), but will pump oil up top while the engine is under no load. When it starts after a few seconds, there is no knock because the engine got primed before it fired. The pump pumps oil as long as the engine is being cranked over (it's mechanical pump) so when it does fire, it is already primed up top, so no knock.
JK Enthusiast
Joined: May 2010
Posts: 462
Likes: 0
From: Lowell, AR
Originally Posted by Boom
I think what he means is that by holding down the pedal while cranking, it will not fire right away(computer prevents it), but will pump oil up top while the engine is under no load. When it starts after a few seconds, there is no knock because the engine got primed before it fired. The pump pumps oil as long as the engine is being cranked over (it's mechanical pump) so when it does fire, it is already primed up top, so no knock.
Originally Posted by Spinall4
Also I notice what helps is you turn to on position and wait till the beeping stops then starts it. Start it like a diesel truck