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" Senior Editor Mike Allen answers readers&amp;#039; car questions.Q: A pick-up truck with a tow hitch backed into my car punching a 2&amp;quot; hole in my plastic bumper. Half of the hole is still attached to the bumper with the rest pushed into the bumper padding. How do I pull it out, patch it, paint it, and finish it? HERB MINOR A: The July Saturday Mechanic shows how, it should be on news stands June 15th. Q: I need to put new pads on the rear of my 93 ls400. The left rear rotor is junk. My problem is, how do I break the large spindle nut loose? I&amp;#039;m afraid if I put too much pressure on I&amp;#039;ll break something. I&amp;#039;m using a 1/2 drive breaker bar with what I think is a 36mm socket. I&amp;#039;ve soaked it with &amp;quot;blaster&amp;quot; penetrating oil. HELP! RALPH KNOWLTON A: These large spindle nuts can often take several hundreds of pounds of torque to break free. Put a piece of water pipe over the end of the breaker bar for more leverage. I&amp;#039;ve broken a couple of 1/2&amp;quot; flex handles trying to do this, which is why I always buy warrantied tools. Q: We have a &amp;#039;95 Dodge Dakota with 125,000 miles, 3.9 L V-6 and a strange fuel guage problem that started recently. When the tempeture is warm (above 75 degrees) the needle bounces/flickers between the actual fuel level and empty or just bounces in 1/8 to 1/4 tank increments below the correct level that should be indicated. The low fuel light DOES NOT come on when the needle goes below 1/8 tank. The low fuel light appears to be working correctly. On a cool morning no problem, correct indication, but in the afternoon, it show either empty or flicker. Today it read empty with 2/3 a tank. I can get the guage back up by shaking the truck. Any ideas? JOHN WEBB A: The sender is bad. Replace it. It&amp;#039;s inside the gas tank. Q:I have a 2001 Durango 4.8 engine. The aux water pump cracked and lost the coolant. The pump was replaced and now the car seems to run a little hotter. What is this little pump and what makes it work? PETE A: The aux pump, as far as I can tell, is to provide warm water to the heater core. I think this is so because the pump will only operate if the heater temp control is above halfway up, and the heater fan is running. Your cooling system may not have been properly bled of air when it was refilled. Q:I have a 1998 Oldsmobile Intrigue, with a 3800 V6. I have been experiencing a regular engine misfire. I had my auto supply store, AutoZone, hook up their code reader and it showed a misfire on cylinder #1. I first changed the plugs and wires with no noticable improvement, still have a service engine light. I then replaced the coil pack for cylinder1 &amp;amp;amp; 4. Still no change. Is the next logical step the control module? I&amp;#039;ll appreciate any help! GREG KING, MARATHON, NY A: You still haven&amp;#039;t determined if the misfire is electrical or fuel-related, or even if it&amp;#039;s mechanical, like low compression. Start with a compression check. Then I&amp;#039;d swap the injectors between that bad cylinder and another to see if the misfire follows. If it does, it&amp;#039;s a bad or dirty injector. Be systematic and do some systems analysis before you start throwing expensive parts at it. "^^<http://www.w3.org/2001/XMLSchema#string>
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