questions about cam chains on 4.0 sohc

[bronco82yellow46]

hi guys just need a little info,. just rebuilt my 1999 explorer 4.0 , got otc tools set up everything right motor started on 1st turn and runs good .But when cold you can hear chain on left head until oil pressure and temp comes up. is this normal? not really loud just alittle noise. rebuilt many ford smallblock and bigblocks .Just need info thanks

 

[boominXplorer]

There is a update plastic part that goes in the oil galley under the t30 torx bolt next to the tensioner. If you got a complete timing set it might of came with one. It will help keep oil in the tensioner and build pressure.

 

[bronco82yellow46]

replaced it, with the one in the kit. but thanks

 

[2000StreetRod]

start up rattle

I noticed the same thing after installing my new camshaft timing components. Synthetic oil helps because it flows faster from the pump to the chains. Also, using an oil filter with a check valve may help. The only real solution I found was to install a preoiler. With my Accusump, I wait a few seconds after turning on the ignition for the oil pressure to come up, then I crank the starter.

 

[bronco82yellow46]

Thanks for your help .going to changeover to synthetic oil after gets broken in . changing filter tomorrow thanks again bobby