5.2 ping - I have changed the usually suspects, what is left?
From : scruff
Q: i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
Replies:
From : david
i also did not notice if you had replaced the pcv valve. a bad one can cause ping as well as bogged down acceleration problems depending on how it failed i recommend using only the mopar pcv valve i have had lots of problems with autozone or advance auto ones. here is the text of the test procedure. you can get the whole bulletin with pictures from buying the subscription at alldatadiy $25 or going to your local dealer service. number 09-05-00 group engine date feb.25 2000 models 1994 - 1999 ab ram van 1994 - 1999 an dakota 1994 - 1999 bribe ram truck 1998 - 1999 dn durango 1994 - 1998 zj grand cherokee 1996 - 1998 zg grand cherokee this bulletin supersedes technical service bulletin 09-06-99 dated sep.10 1999 which should be removed from your files. this is a complete revision and no asterisks have been used to highlight revisions. subject spark knock and engine oil consumption due to intake manifold pan gasket oil leak over view this bulletin involves the replacement of the engine intake manifold plenum pan gasket. note this bulletin applies to vehicle equipped with a 3.9l 5.2l. or 5.9l gasoline engine. symptom/condition an engine intake manifold plenum pan gasket oil leak may occur on some v-6 and v-8 style engines. the oil leak is internal to the engine so no external oil leakage will be present. two symptoms of this oil leak condition may be present. the vehicle operator may experience an engine spark knock during acceleration and/or an increase in the amount of engine oil consumed by the engine. diagnosis make sure technical service bulletin tsb 18-48-98 has been performed. note it is important that the coil and spark plug wires are routed exactly as specified in tsb 18-48-98 to achieve the most benefit. inspect the positive crankcase ventilation pcv valve. shake the pcv valve to verify that the pintle inside of the pcv valve is free. replace the pvc if the pintle is not free. if the intake manifold plenum pan gasket is leaking an additional vacuum source will be created inside of the engine at the location of the pan gasket leakage. engine combustion blow-by gases oil vapor and air from the crankcase filter/breather may be drawn past the leaking pan gasket and into the intake manifold. in most cases when this condition occurs an engine at idle will create the highest vacuum and lowest amount of engine blow-by. 1. allow the engine to reach normal operating temperature. 2. stop the engine. 3. disconnect the breather hose from the air cleaner. 4. attach a vacuum/pressure gauge to the end of the breather hose figure 1. 5. disconnect the pcv valve hose from the intake manifold. 6. seal off the intake manifold pcv valve hose port opening. 7. seal off the open end of the pcv valve hose figure 2. note during this diagnosis it would be normal for the engine to develop pressure within the engine crankcase. this is due to the normal process of exhaust blow-by gases leaking past the engine piston rings and accumulating in the engine crankcase. do not allow more than 3 psi 20.7 kpa of pressure to build within the engine when performing the following diagnostic procedure. 8. start the warmed engine and observe the vacuum gauge. 9. allow the engine to idle for approximately 30 seconds. do not allow more than 3 psi 20.7 kpa of pressure to develop in the engine crankcase. 10. if the attached vacuum / pressure gauge does not indicate that a vacuum is present in the engine crankcase then the intake manifold plenum pan gasket is good and no further internal engine vacuum leak diagnosis is required. 11. if an internal vacuum leak is present then perform the repair procedure. snip david afaik there is no vacuum leak. i have removed the tb and looked inside; no signs of leakage no oily looking places. i do not recall if i followed the other procedure to check for the plenum vaccum leak. which i cannot quite recall right the all of the specifics on right now checking for a vaccuum or blowing at a particual hose someone please fill in the details on that procedure for me again i will check it again. on sun 31 aug 2003 092110 -0500 david dkuhajda@locl.net.spam wrote when did they go to the improved intake manifold gasket you might be overlooking the most common cause yet if yours has the old style intake manifold gasket. follow the procedure to check for vacuum in the crankcase to confirm. david i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
From : ringo
try getting rid of the excess carbon from the engine and remember the 180 thermostat is allowing more fuel to be burned which gives power but if incompletely combusted leaves carbon. .
From : tbonemr rather b beachen
you have to resort to making up things to try to get your point across and what would that be troll first you say you got 1mpg increase from the word go then you said you had to run several tanks.. really!!! where exactly did he say that -- if at first you dont succeed youre not cut out for skydiving .
From : nitpik
high octane fuel i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
From : david
when did they go to the improved intake manifold gasket you might be overlooking the most common cause yet if yours has the old style intake manifold gasket. follow the procedure to check for vacuum in the crankcase to confirm. david i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
From : paul jensenscruff
paul jensen pjensen@gnt.net wrote so your answer is no you havent tried it so you are a moron. you are talking about something you have not used yourself so you are clueless. i have several months worth of milage records from both before and after the tornado was installed and the average increase is 1 - 1.5 mpg snip this could easily be attributed to seasonal changes in ambient air temperatures seasonal changes in the gasoline blend changes in the motor oil youre now using etc. oil wasnt changed at that time and my records are precise. change was immediate that day. .
From : scruff
afaik there is no vacuum leak. i have removed the tb and looked inside; no signs of leakage no oily looking places. i do not recall if i followed the other procedure to check for the plenum vaccum leak. which i cannot quite recall right the all of the specifics on right now checking for a vaccuum or blowing at a particual hose someone please fill in the details on that procedure for me again i will check it again. on sun 31 aug 2003 092110 -0500 david dkuhajda@locl.net.spam wrote when did they go to the improved intake manifold gasket you might be overlooking the most common cause yet if yours has the old style intake manifold gasket. follow the procedure to check for vacuum in the crankcase to confirm. david i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
From : scruff
tried it same ping; abolutely no difference between regular or premium which is puzzling as well on sun 31 aug 2003 082336 -0600 nitpik bubba@mindspring.com wrote high octane fuel i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .
From : mr rather b beachen
assuming you bought the truck while still under warranty and assuming you kept all the work orders you should contact a lemon law lawyer and go after dodge. that is what i did with my 98 ram and after the warranty expired and dodge bought it back and paid the lawyer fee without even going to court. i had done what you did and 1 dealer told me at the first complain to switch to higher octane fuel. at 20000 miles i got a valve job because of teh knocking and pinging and when i went to pick it up the dealer told me that they had found the cause for the knocking and pinging-that it was due to the fact that i was using high octane fuel. i looked at the sa and told him that in fact it was him/dodge that had told me to use the higher octane fuel-he told me that he was just the messenger from dodge. 2 i had taken dodge to arbitration twice and lost. if you dont want to get a lawyer i can supply you the name of the one that i used in california-he charged me zero-if it had gone to court he would have started charging me but if we had won in court dodge would have had to pay his fees i suggest trying tufoil. i tried other so called snake oil to try to get rid of the problem-prolong tribotech zmax-they did no good. i had used tufoil in my vehicles before but had no put it in the dodge until 37000 miles. within 2000 miles the problem was gone but then i had already received noticed that dodge was buying the truck back. on sun 31 aug 2003 141010 gmt scruff scruff@cxyxbxexrxjxuxnxkxixe.com wrote i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff mr rather b. beachen to you ratherbbeachen@hotmail.com .
From : mr rather b beachen
the valve job i got did get rid of the carbon but shortly thereafter the knocking and pinging came back. on mon 01 sep 2003 004842 gmt ringo ringo270@shaw.ca wrote try getting rid of the excess carbon from the engine and remember the 180 thermostat is allowing more fuel to be burned which gives power but if incompletely combusted leaves carbon. mr rather b. beachen to you ratherbbeachen@hotmail.com .
From : bdk
ratherbbeachen@hotmail.com says... the valve job i got did get rid of the carbon but shortly thereafter the knocking and pinging came back. on mon 01 sep 2003 004842 gmt ringo ringo270@shaw.ca wrote try getting rid of the excess carbon from the engine and remember the 180 thermostat is allowing more fuel to be burned which gives power but if incompletely combusted leaves carbon. mr rather b. beachen to you ratherbbeachen@hotmail.com like someone else said have a tech make sure that the timing isnt totalling more than 36-40 total. also make sure tdc is really tdc and you arent really setting the timing at 15 degrees of some other too high amount. my truck broke a spring in the distributor and if i hadnt fixed it as soon as it happened i would have had to replace the pistons as they were melting enough to put little black balls on the plugs. if you see them you have a serios problem. pull the plugs. is one oily/sooty the manifolds on sb mopars are famous for leaks. my 77 360 had this problem over and over again. oil got sucked into the intake and it would ping bad enough to immedately change the gaskets. i finally solved it by getting some oringed gaskets and using some horrible blue gasket cement on them and letting it sit for 12 hours before running it. for the rest of the time i had the truck the intake was one of the few places it didnt leak. good luck bdk .
From : al
i had the same problem with mine only it was in a 99 ram. had it to the dealer 3 times after they updated the computer and used all their funky diagnostic tools to remedy the situation they finally gave me an answer to my problem its normal and i should use a higher octane fuel! blah blah blah. typical dealer answer when they cant fix something. all i did was replaced the oem spark plugs with platinums and widened the gap about .005 above oem specs and i have not heard a ping since using regular not premium. that was about two years ago. i have a 99 dakota with 5.2l with the characterist ping. i have tried the following 1. tsb wire reroute 2. napa bras cap and rotor 3. 180 thermostat 4. autolite 3923 plugs 5. msd superconductor wires while all things added gave some performance improvements i still have ping. what is next im stumped... scruff .