engines dont pop. or do they?

[moparvwfreak]

i was working on the Bucket today, and i had it running for a leak check of the cooling system. no leaks i could see but i need a new thermostat housing. the one on the block, not the cap. and i heard this,

 

http://smg.photobucket.com/albums/v422/moparPW200guy/78%20620/?action=view&current=061409004.flv

 

 

any ideas??? i didn't think engines were supposed to sound like thy are popping popcorn. i really dont want to have to scrap this motor as i want to put it into my 73 eventually.

[steve g]

hmmm..... if ya revv it up what does it do? I had a small nut fall in my alternator once and it sounded similar.... maybe remove the belts and run it briefly to see if it goes away.... underhood noises can be deceiving.

[banzai510(hainz)]

The thing sound rattley to me.

You open the valve cover and make sure the vlave lash is set and see if the timming chain guides are OK.tight and slack side. No long bolt on state housing pushing the tite side guide IN.

 

alternator tight. upper lower mount

[moparvwfreak]

i'll check that. i know i have all 3 bolts for the alt on this one but one is loose. i even held the alt while it was running and the same sounds emitted. but i will look into that. thanks!

 

 

and yes. valve adjustment was done a month ago, adn while i was in there i checked the guides and nothing was out of the ordinary. this is one that just creeped up on me.

[datzenmike]

Is the Phenolic (plastic) spacer on between the fuel pump and the head???

[moparvwfreak]

from what i can tell it is, but i didn't look real hard. i will check in a few.