4m40 knocking sound (acceleration)

**Dudee** · January 22nd, 2010 07:18 PM

Mga mitsubishi experts and pajero owners...

My 2003 pajero has a knocking sound (tac-tac-tac), continously and loudly upon pressing the accelerator pedal in a rush (PA-BIGLA).. as early up 1.5 rpm, the knocking would start and never stop... BUT (weird part)... if I will accelerate it slowly.. kahit up to 3RPM, walang knocking sound...

I had two mechanics checked, they can't diagnose the problem.., ang sabi lang OVERHAUL daw kailangan... huhuhu...

any help will be appreciated... thanks

**Dudee** · January 22nd, 2010 07:54 PM

may pahabol tanong pa ako...

kapag palitan natin ang mga shocks ng 2003 pajero to GAS type, nawawala po ba ang options ng Soft-Moderate-Hard? At patay na rin ang ilaw ng tire sensor ko...

Alanganin ko dalhin sa CASA kasi I'm sure patay ako sa gastos....

any help anyone?

**jick.cejoco** · January 22nd, 2010 08:46 PM

Originally Posted by Dudee

Mga mitsubishi experts and pajero owners...

My 2003 pajero has a knocking sound (tac-tac-tac), continously and loudly upon pressing the accelerator pedal in a rush (PA-BIGLA).. as early up 1.5 rpm, the knocking would start and never stop... BUT (weird part)... if I will accelerate it slowly.. kahit up to 3RPM, walang knocking sound...

I had two mechanics checked, they can't diagnose the problem.., ang sabi lang OVERHAUL daw kailangan... huhuhu...

any help will be appreciated... thanks

auto trans?

**afrasay** · January 22nd, 2010 09:01 PM

check mo muna timing, valve clearance, pede rin fuel knock yan, check for air in the fuel line. finally mag pa compression test ka. if all checks out baka katok na yan ng conrod bearing. how many kms na tinakbo?

**Dudee** · January 22nd, 2010 09:14 PM

Originally Posted by afrasay

check mo muna timing, valve clearance, pede rin fuel knock yan, check for air in the fuel line. finally mag pa compression test ka. if all checks out baka katok na yan ng conrod bearing. how many kms na tinakbo?

61T mileage.. matic transmission.

I recently had it oil changed, and change atf using shell DONAX... ok po ba ang DONAX?

**electricx** · January 22nd, 2010 11:22 PM

Originally Posted by Dudee

Mga mitsubishi experts and pajero owners...

My 2003 pajero has a knocking sound (tac-tac-tac), continously and loudly upon pressing the accelerator pedal in a rush (PA-BIGLA).. as early up 1.5 rpm, the knocking would start and never stop... BUT (weird part)... if I will accelerate it slowly.. kahit up to 3RPM, walang knocking sound...

I had two mechanics checked, they can't diagnose the problem.., ang sabi lang OVERHAUL daw kailangan... huhuhu...

any help will be appreciated... thanks

If your mechanics has an automotive stetoscope and technically knows different engine sound, they can easily identify and locate that knocking sound. Saan po ba location nyo? Kung malapit lang sa amin I'll identify it for you for FREE of charge

**Dudee** · January 23rd, 2010 05:59 AM

Originally Posted by electricx

If your mechanics has an automotive stetoscope and technically knows different engine sound, they can easily identify and locate that knocking sound. Saan po ba location nyo? Kung malapit lang sa amin I'll identify it for you for FREE of charge

thanks.. taga probinsya po ako..

**bigbrocx** · January 23rd, 2010 10:54 AM

Originally Posted by Dudee

may pahabol tanong pa ako...

kapag palitan natin ang mga shocks ng 2003 pajero to GAS type, nawawala po ba ang options ng Soft-Moderate-Hard? At patay na rin ang ilaw ng tire sensor ko...

Alanganin ko dalhin sa CASA kasi I'm sure patay ako sa gastos....

any help anyone?

afaik mawawala na yun pero hindi mawawala ilaw ng tire sensor mo sa mags nakalagay yun sensor nun.

**iennod** · January 24th, 2010 12:05 AM

may ganyan din ako dating problema. sabi sakin nagloloko daw yung EGR ko. ginawa ng mekaniko pinasakan ng pako yung vaccuum tube na nagcoconnect ng EGR at intercooler. nawala agad yung tunog. try mo po baka sakali gumana.

**Dudee** · January 24th, 2010 05:42 AM

Originally Posted by iennod

may ganyan din ako dating problema. sabi sakin nagloloko daw yung EGR ko. ginawa ng mekaniko pinasakan ng pako yung vaccuum tube na nagcoconnect ng EGR at intercooler. nawala agad yung tunog. try mo po baka sakali gumana.

what do you mean "pinasakan ng pako"? Is it normal to have dark smoke (upon rev) coming from the vacuum tube (if not connected with the intercooler)?

How do I check if the intercooler is still functionable?