Recent content by fireman4

  1. fireman4

    [SOLD] 71 Dodge Dart 3.7l 225

    1971 Dodge Dart Swinger 3.7l 225 slant 6 with 36000 original miles. Does NOT have A/C. The engine was rebuilt in 2008 and has approximately 10000 miles on the rebuild. Has a Comp Cam and a FlowMaster exhaust that sounds great. Super clean car with no rust that was previously 80% restored. It...
  2. fireman4

    intermittent backfire/low idle

    I installed a new gasket, actually did a double gasket. The leak is 99% resolved, it only backfired once on the test drive and was barely audible. thx
  3. fireman4

    Exhaust leak

    You do not have to remove the entire assemble. I removed the manifold nuts and slid it away from the head, resting it on a 4x4 block of wood. It gave enough room to install a new gasket. I did a double gasket and used Copper Coat gasket sealer to marry the two together. You can use a magnet to...
  4. fireman4

    intermittent backfire/low idle

    It is a brand new distributor with the vacuum pre-installed. I put a vacuum on it to test it before I installed it to insure that it advanced the rotor. I had heard somewhere you should do that before you install a new distributor. The timing mark is probably off a bit since it has two marks. I...
  5. fireman4

    intermittent backfire/low idle

    Pulled plug wires one at a time, when I pulled #5 it did not backfire. I lashed the valves to .010 and .012. ( which I belive are the specks for the comp cam that is in it) this raised the idle and I was able to adjust it down with the fuel mixture screw. I also discovered that the throttle...
  6. fireman4

    intermittent backfire/low idle

    I previously treated the valves with sea foam before starting and after I got it running treated them with Marvel Mystery Oil. I am also running Marvel in the oil. I lashed the valves again yesterday (i do it while its running) everything looked good. I still need to try and isolate to one...
  7. fireman4

    intermittent backfire/low idle

    I will try to isolate by pulling plug wires. Not sure how to check for valve travel distance??? I am still thinking it is a carb issue but that may just be wishful thinking. Thx for the suggestions.
  8. fireman4

    intermittent backfire/low idle

    Good suggestions and a few I hadn’t thought of. Advance timing to 12*or 15*– I tried this but is seems to backfire more if it is advanced more than 5* or retarded more than 5* BTDC Water pump – a good possibility will pull it to see. Valve springs – also a good...
  9. fireman4

    intermittent backfire/low idle

    Yes and with the vacuum advance disconnected
  10. fireman4

    intermittent backfire/low idle

    I recently resurrected a 71 Dart with a 225. I rebuilt the carb, installed a new distributor, set timing to 5* BTDC, new coil, ballistic resistor, gaped the spark plugs, lashed the valves. The car fires right up and will idle all day no problem. If it is revved up it will back fire...
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