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» Northern California Ford Owners     » Automotive   » Tech Talk   » Another 4v Mach1 Powered GT Alive! Help with Knocking please~

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Author Topic: Another 4v Mach1 Powered GT Alive! Help with Knocking please~
99Flyer
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The beast has just been released! A swap that I started in 2004 is now on the road. I have some issues to button up still but overall it sounds great! The only trouble codes that I am getting right now are related to the Auto tranny that used to be under the car.

The loud knocking is coming from the passenger side valve cover. I'm going to pull the cover tomorrow and hope and pray it wasn't a loose bouncing spark plug. anything else that could cause this sound?

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
99Flyer
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Also the 2003 Mach1 motor has 13K miles but has been sitting for 7 years. I changed the oil before starting. The sound is DEFINITELY from the driver side Valve cover.

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
Blind
2.3L
CAFords OG
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lol, first it's passenger, now it's definitely drivers side?


check the simple things first, COP's + spark plugs being tight, make sure they're all firing, unplug the COP one at a time to see if the sound goes away at idle, etc.

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
99Flyer
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quote:
Originally posted by Blind:
lol, first it's passenger, now it's definitely drivers side?


check the simple things first, COP's + spark plugs being tight, make sure they're all firing, unplug the COP one at a time to see if the sound goes away at idle, etc.

Yeah Driver side lol... first post I was mixed up. I'll update after I check the COP's and spark plugs. Wish me luck and no damage!

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
LSFairmont
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Posts: 3653 | From: the land of the lost | Registered: Sep 2005  |  :
50DADDY
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4V's are notorious for eating up passenger side cylinder heads,they can waste the guides or seats or even warp cam journals on the rear cylinders.Its a cooling issue,they make a mod to fix the problem.I know you said drivers side but sometimes valvetrain noise is hard to pinpoint.

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"Im not stupid,i just act that way so i dont make you dummies uncomfortable."

"Old age and treachery shall overcome youth and skill."

Posts: 4827 | From: Suckramento | Registered: Jul 2003  |  :
99Flyer
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Yes, my roommate now knows the valve cover is not plastic, but focus on the knocking sound definitely coming from the driver side head.

Video of knocking in head

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
Blind
2.3L
CAFords OG
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doesn't sound like a blown spark plug to me at all, if it's in the front it might be the timing chain?

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
LXjames
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rocker? valve adjustment?

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On Point Motorsport prez.
King Lx

Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011  |  :
99Flyer
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Any tips on manuvering a 4v valve cover off without lifting engine? Looks like it's almost there but won't clear.

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
Broke4.6
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quote:
Originally posted by 99FLYER:
Any tips on manuvering a 4v valve cover off without lifting engine? Looks like it's almost there but won't clear.

you have to remove the hydroboost...3 bolts and a cotter pin inside behind the petal and one on the firewall...13mm i believe! no way around it...TRUST ME lol

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01 GT -lazer red- 32v swap

Posts: 1020 | From: Lodi, Ca | Registered: Apr 2009  |  :
Blind
2.3L
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yeah without removing the hydroboost there's no way, unless you unbolt the motor mounts and lift the motor up as high as the trans tunnel will let you.

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi

Posts: 8521 | From: Fairfield | Registered: Jul 2003  |  :
99Flyer
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Thanks guys! Tomorrows project (Today was Mom's birthday)

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2021 Bronco Black Diamond Sasquatch
1971 Camaro 350 SC
1977 GMC Kingsley Class A

Posts: 415 | From: San Francisco | Registered: Jul 2002  |  :
Broke4.6
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Im going to be doing this next week on a customer car! If you decided its to much work..bring it down to my shop!

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01 GT -lazer red- 32v swap

Posts: 1020 | From: Lodi, Ca | Registered: Apr 2009  |  :


 
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