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Engine Knock


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Hey all I've got an engine knock. Before you read below my ultimate questions are should I upgrade lifters, valves, ...



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Old 07-11-2017, 11:40 AM
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Engine Knock

Hey all I've got an engine knock. Before you read below my ultimate questions are should I upgrade lifters, valves, and/or rods? (If it is a lifter tick) If so, what should I upgrade to? I don't plan racing or supercharging. I hope nothing warped or is damaged, but temps got high. Here's what happened:

It all happened quickly. The truck overheated a couple days ago. Check gauge light came on while on the freeway. I slowed down to see what was up, lost power steering quickly after, then pulled over. Temps were 260+ by the time I was stopped. No knocking then. A tow truck came and I drove it onto the bed (temps were down), and there was no knocking. Took it to the dealership where they tried to bend me over on prices. Said I was leaking coolant out of my heater hose and oil was low. But while checking everything out they discovered the ticking. Seeing how they charged me 350 for an oil change, topping off coolant, and not much else I decided I'd take it somewhere else. But first I wanted to see if it was bad spark plugs. All of the easy ones to get out were fine. The code is cylinder 9 (P0309) misfire. I can't get to the 9th plug because the truck has aftermarket wheels and there is one gyat damn lugnut that none of my sockets will fit on. So access through the wheel well is out. This is my dd and I have no other transportation to get what is needed and I don't think I can fix whatever is wrong anyways. Since all the others were fine I'm guessing the 9th is fine too? Unless the last owner encountered the lugnut when replacing and didn't bother with 7 & 9. I've got a power steering pump on the way from Scott at Venomous1 (thanks!) so I guess I'll just have a shop my cousin trusts tear the top down and look into it, while also doing the pump. Any thoughts or should do's? I have a short video clip of the knock but I don't know how to change format and/or upload. Thanks in advance for any responses!
Zach

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Old 07-11-2017, 12:18 PM
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I think a tear down is in your best interest. If your temps got over 260 you could have warped the heads plus low on oil could have caused more problems. For peace of mind i would tear the top end apart and see if you can find any issues and find where you are getting this knocking from. Mine did it awhile ago found out my keepers on one of my valve spring came halfway out and the rocker was hitting it. As far as upgrading i would find this issue first and go from there because those upgrades can get very expensive especially if you do your valves or need a valve job done
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Old 07-11-2017, 12:43 PM
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probbably bent a push rod or something,,, pull the valve covers for a simple check for anything lose or bent.... push and pull on each to see if one is loose or bent
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Old 07-11-2017, 08:06 PM
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If it was overheated heads are warped and likely bearing ruined or spun it sounds. A knock is lower in engine, tick will be higher in engine like lifters. Check out drain plug metal content. Filter content
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Old 07-11-2017, 11:30 PM
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check the harmonic balancer. see if it is wobbling. If it is loose enough the belt will slip and the power steering won't work, as well as the fan, could have caused the overheat issue. May even sound like a knock if it is loose enough. You NEED to get that lug nut off!! sooner or later...... get if off ,so you can do a compression test of each cylinder while you change the plugs. this is where to start..... Then chase issues that are found. next would be to pull the valve covers and check for broken springs/bend rods.... the compression test should tell you if you are having any issues...... my 2 cents......
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Old 07-12-2017, 09:49 AM
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Why do you need to take the wheel off to get the spark plug out?
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Old 07-12-2017, 12:07 PM
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Thanks guys. What's frustrating is the dealership heard the tick/knock but did an oil change and coolant flush anyway, assuming they knew they (or I) would have to drain it all if it required getting to the heads. Maybe I shouldn't be so hard on them. It's not like I'm equipped to do this. I am going to read up as much as I can on it all though.

Iron I read it is easier to get to if you go through the wheel well. But the last plug is really close to the firewall, so maybe it might not be as helpful as I thought.
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Old 07-12-2017, 09:20 PM
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I did all my plugs from up top, not fun but it's easy to do
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Old 07-13-2017, 08:03 AM
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Quote:
Originally Posted by ZRT10 View Post
Thanks guys. What's frustrating is the dealership heard the tick/knock but did an oil change and coolant flush anyway, assuming they knew they (or I) would have to drain it all if it required getting to the heads. Maybe I shouldn't be so hard on them. It's not like I'm equipped to do this. I am going to read up as much as I can on it all though.

Iron I read it is easier to get to if you go through the wheel well. But the last plug is really close to the firewall, so maybe it might not be as helpful as I thought.
Swivel socket helps in that situation, you don't need to go through the wheel well.
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Old 07-13-2017, 02:09 PM
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There are some factors i guess like height weight and age of the person. Im 6'1 and still get on the motor to get to it.
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