missing after driving on bumpy roads
Posted: Tue Sep 19, 2006 1:55 pm
The 3.0 milano gold has developed a frustrating tendency to miss. When the problem first started, I was blaming it on dirty mexican gas. At the time, I had run the tank really low and the car started to miss after I put in some 87 octane. I immediately went and added an equal ammount of 92 octane and hoped that that would help. Sadly, it did nothing.
Next, I siphoned the gas out of the tank, removed the fuel filter (which ended up being really dirty), and drained the tank by removing the banjo bolts for the feed and return lines.
I installed a new filter and set out once again and all seemed to be well and good. Then, I drove for 15 minutes on some really rough pavement (at low speeds). I pulled onto the highway and when I tried to accelerate, the missing returned. After that, I added a can of fuel injector cleaner to my tank to see if that would help. I used the can with only about 5-6 gal of gas to make it a fairly aggressive concentration.
I am currently back in wisconsin for the week and I have access to my parts car, a 2.5l platinum. I plan to bring parts of it back to mexico with me so that I can sort things out (I hope). I have been advised to have the fuel pressure checked, meaning that the fuel pump might be faulty. Should I bring the fuel pump from the parts car? Fuel pump combo relay?
My cap and rotor look good, I have not checked the plugs due to the fact that I didnt have a plug wrench with me. I will bring the plug sockey with me when I go back.
Could this problem be caused by my ignition wires? I have my cover off of my timing belt and I used a zip tie to hold the wires up and away from the cams. it is attached to the front of the fuel rail, I think. Could my old plug wires be shorting? Could that be the cause of my intermittent miss?
What about injectors? I have been told by a few people that if it were an injector, the problem would not likely be intermittent. Is this true?
Maybe I need to buy a new set of wires. Original type or Magnecore?
What other parts warrant investigation?
Thanks in advance for any help.
Next, I siphoned the gas out of the tank, removed the fuel filter (which ended up being really dirty), and drained the tank by removing the banjo bolts for the feed and return lines.
I installed a new filter and set out once again and all seemed to be well and good. Then, I drove for 15 minutes on some really rough pavement (at low speeds). I pulled onto the highway and when I tried to accelerate, the missing returned. After that, I added a can of fuel injector cleaner to my tank to see if that would help. I used the can with only about 5-6 gal of gas to make it a fairly aggressive concentration.
I am currently back in wisconsin for the week and I have access to my parts car, a 2.5l platinum. I plan to bring parts of it back to mexico with me so that I can sort things out (I hope). I have been advised to have the fuel pressure checked, meaning that the fuel pump might be faulty. Should I bring the fuel pump from the parts car? Fuel pump combo relay?
My cap and rotor look good, I have not checked the plugs due to the fact that I didnt have a plug wrench with me. I will bring the plug sockey with me when I go back.
Could this problem be caused by my ignition wires? I have my cover off of my timing belt and I used a zip tie to hold the wires up and away from the cams. it is attached to the front of the fuel rail, I think. Could my old plug wires be shorting? Could that be the cause of my intermittent miss?
What about injectors? I have been told by a few people that if it were an injector, the problem would not likely be intermittent. Is this true?
Maybe I need to buy a new set of wires. Original type or Magnecore?
What other parts warrant investigation?
Thanks in advance for any help.