Engine rattle on down rev

[losh1971]

Just fitted my new rockers and I have a rattle after the revs drop down. I haven't driven it yet. Revving it quickly up to maybe 3.5k in park, then once it drops back to idle you hear a rattle that lasts 2-3 seconds and then quiet again. I don't know if I had this before as i don't normally rev the engine up in park. Any ideas and if it is something to worry about?

 

[losh1971]

The rattle is worse and i am not sure what is going on.

 

[losh1971]

It seems to be idling at 1000 revs too.

 

[Dylan kingswood]

I’d rip of rocker covers as first port of call and have a look make sure everything looks good and nothing loose

 

[losh1971]

Just add when you give it some revs the noise goes away. It's almost like it's low on oil pressure.

 

[losh1971]

I’d rip of rocker covers as first port of call and have a look make sure everything look
s good and nothing loose

I did tripple check all the rocker bolts and all were torqued to spec.
I will add i had two leads switched on the pass side but i quickly sorted it.
Could have blown something which is now making it idle high?

 

[Dylan kingswood]

I’m no good giving advice without seeing in person lol but if it was me I’d be looking under rocker covers you have put on and working from there

 

[Dylan kingswood]

ive Only mucked around with v8’s and have always had to add shims or change rod lengths, did you check clearances winding motor over by hand after torquing to spec

 

[losh1971]

There was no clearance the, rockers go down all the way onto the rods. The kit did not come with shims. The rockers are not adjustable.
I will slip the passenger cover off tomorrow. The drivers side is a bastard to get off and back on again. RACT wasn't sure but he said it sounds like cam.

 

[losh1971]

It goes heaps better. But the rattle certainly is concerning. I don't know if it was there before, or started after i fitted the rockers.