06 HHR Engine Noise - Anyone know what this is?
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From: Northern Ohio
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Senior Member
Joined: 12-05-2014
Posts: 3,368
From: Northern Ohio
You checked the timing and all timing components, by removing the timing cover again?
Between the extreme sludge build up, all the metal shavings from the old timing components, and applying and sanding JBWeld inside the engine, I would be thinking that's rod knock. Caused by blocked oil passages.
Between the extreme sludge build up, all the metal shavings from the old timing components, and applying and sanding JBWeld inside the engine, I would be thinking that's rod knock. Caused by blocked oil passages.
A single sticking valve? Or some other broken piece?
Compression check?
(Not sure I’m even buying my own logic here, in part because I think I’m hearing a 4/4 cadence.)
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Joined: 04-20-2023
Posts: 11
From: TX
Let me clarify more for u guys. The first thing I did when I started the job was to take off the valve cover & I saw the timing chain with a lot of slack just hanging under the top guide. I then took off the harmonic balancer & the timing cover, & I saw the balance shaft chain had a lot of slack also. All guides were intact. I then took out the #1 spark plug nearest the passenger tire. I cleaned off the surface around the #1 plug & covered the plug hole with a piece of duct tape, just as i did when working on my v8 engines when finding tdc.
I rotated the HHR crank with a big ratchet & when the key way was at 12 o'clock, the tape was still intact, so i rotated the engine again & as the key way was "approaching" 12 o'clock again, air started escaping from the taped spark plug hole. I did this about twenty times & the cam sprocket marks never lined up at 10 & 2 o'clock as all of the videos I've watched states.
On the exhaust stroke the balance shaft chain was already lining up with the intake mark at 12, exhaust at 6, & the crank at 6 lined up with the block mark, but the cam sprocket marks never lined up with intake at 2, nor did the exhaust line up at 10 during the compression stroke.
The last compression stroke rotation that I did, the balance shaft marks were all lined up correctly. But the cam intake sprocket mark was at about 12:30 instead of 2 o'clock, I misspoke when I said it was off by 2 teeth.
I ordered the complete cloyes kit with the water pump & balance shaft gears, but I didn't replace these, but everything else was replaced. All guides, both tensioners, oil nozzle, both chains, both crank pulleys, both camshaft bolts, new crank bolt, I also ordered & replaced the upgraded black timing guide's upper bolt, new timing & valve cover gasket, & timing cover crank seal. Also replaced the belt & belt tensioner. I pulled the pin on the one tensioner & activated the other tensioner with a long screwdriver with the tip wrapped in duct tape. Everything was torqued to spec, & I did reconnect the sensor on the air box.
I've done all of the work on all our cars since I was a teen, & this seemed like an easy task, but it was time consuming. It took forever to get the cam sprocket marks to line up at 10 & 2, but the balance shaft chain was very simple. I had to move one of the camshafts a little here, a little there, to get the cam gear marks to line up. I know it's an interference engine, but I moved the cams slightly to get the cam gear marks to line up.
I will redo the job again, & as Old Blue suggested by removing the cams & rotate to tdc, then set the cam gears to 10 & 2. Or do u guys think it would be best to just get the cylinder head rebuilt?
I rotated the HHR crank with a big ratchet & when the key way was at 12 o'clock, the tape was still intact, so i rotated the engine again & as the key way was "approaching" 12 o'clock again, air started escaping from the taped spark plug hole. I did this about twenty times & the cam sprocket marks never lined up at 10 & 2 o'clock as all of the videos I've watched states.
On the exhaust stroke the balance shaft chain was already lining up with the intake mark at 12, exhaust at 6, & the crank at 6 lined up with the block mark, but the cam sprocket marks never lined up with intake at 2, nor did the exhaust line up at 10 during the compression stroke.
The last compression stroke rotation that I did, the balance shaft marks were all lined up correctly. But the cam intake sprocket mark was at about 12:30 instead of 2 o'clock, I misspoke when I said it was off by 2 teeth.
I ordered the complete cloyes kit with the water pump & balance shaft gears, but I didn't replace these, but everything else was replaced. All guides, both tensioners, oil nozzle, both chains, both crank pulleys, both camshaft bolts, new crank bolt, I also ordered & replaced the upgraded black timing guide's upper bolt, new timing & valve cover gasket, & timing cover crank seal. Also replaced the belt & belt tensioner. I pulled the pin on the one tensioner & activated the other tensioner with a long screwdriver with the tip wrapped in duct tape. Everything was torqued to spec, & I did reconnect the sensor on the air box.
I've done all of the work on all our cars since I was a teen, & this seemed like an easy task, but it was time consuming. It took forever to get the cam sprocket marks to line up at 10 & 2, but the balance shaft chain was very simple. I had to move one of the camshafts a little here, a little there, to get the cam gear marks to line up. I know it's an interference engine, but I moved the cams slightly to get the cam gear marks to line up.
I will redo the job again, & as Old Blue suggested by removing the cams & rotate to tdc, then set the cam gears to 10 & 2. Or do u guys think it would be best to just get the cylinder head rebuilt?
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