504 Hard Starting
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  1. #1
    Fellow Frogger! Tom_95's Avatar
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    Default 504 Hard Starting

    Hi there

    Finally got the 504 on the road after a horrible bout of missing. Turns out one of the Bakelite plug insulators needed replacing...

    Anywho, on a few occasions the car has been very hard to start when hot. I use the method of slightly depressing the throttle, as suggested in the manual. But this requires 3 or 4 goes at starting the engine before the thing fires. However, if I use NO throttle, it is just as hard to start...

    Any Suggestions?

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    (The plugs, leads, dizzy cap, points and rotor button have been recently replaced)

    Thanks
    Thomas

  2. #2
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    I always seem to remember my 504 being hard to hot start. But when it got to a point where it wouldn't hot start at all, I tracked it to a coil. That was the early model where the coil was attached to the motor.

  3. #3
    Fellow Frogger! Tom_95's Avatar
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    Quote Originally Posted by Russell Hall View Post
    I always seem to remember my 504 being hard to hot start. But when it got to a point where it wouldn't hot start at all, I tracked it to a coil. That was the early model where the coil was attached to the motor.
    How to you mean "Attached to the motor"? (Mine is a '75)

  4. #4
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Tom_95 View Post
    How to you mean "Attached to the motor"? (Mine is a '75)
    The coil bolted to the alternator bracket between the water pump and the alternator.

    Isn't yours a (L)TI? These must have a special coil. A Bosch GT40 is nearest equivalent.
    Plug gap must be a bit wider than normal.

    Haven't we had a similar thread before or is it another car?

    If it's a carby car and auto especially electronic ignition off a later 504 or 505 is strongly recommended.

  5. #5
    1000+ Posts 504-504-504's Avatar
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    Quote Originally Posted by Tom_95 View Post
    How to you mean "Attached to the motor"? (Mine is a '75)
    From memory the coil was mounted on the alternator bracket.

    Paul

    A straight is merely the distance between two corners.

    Current: Peugeot 205 GTi Mi16 1987
    Peugeot 205 Si, one red one silver, both 1991.
    Peugeot 504 Wagon, V6 and 5 speed gearbox.
    Isuzu (Holden) Rodeo, 4WD dual cab, extended chassis.
    Past: Goliath, Isuzu Bellett, Austin A30, Peugeot 203, 403, 404, 504,505.

  6. #6
    Fellow Frogger! Tom_95's Avatar
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    Quote Originally Posted by robmac View Post
    The coil bolted to the alternator bracket between the water pump and the alternator.

    Isn't yours a (L)TI? These must have a special coil. A Bosch GT40 is nearest equivalent.
    Plug gap must be a bit wider than normal.

    Haven't we had a similar thread before or is it another car?

    If it's a carby car and auto especially electronic ignition off a later 504 or 505 is strongly recommended.
    Yes, mine is a carby with a GT40 on the alternator bracket

  7. #7
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    The cars with the coil in that position had something of a reputation for overheating the coil.

  8. #8
    1000+ Posts Beano's Avatar
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    Quote Originally Posted by Tom_95 View Post
    However, if I use NO throttle, it is just as hard to start...
    This does indicate it's an electrical prob. I agree about the coil...

  9. #9
    Fellow Frogger! Tom_95's Avatar
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    Quote Originally Posted by Beano View Post
    This does indicate it's an electrical prob. I agree about the coil...
    Well, lucky for me we bought a parts car the other week. So once we've picked it up, I'll swap the coil and see what happens

  10. #10
    Fellow Frogger! julian b's Avatar
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    Try push starting. If it starts easily then it is an electrical problem .A new Ducellier competion coil and a reley on the positive wire to the coil [so the currint comes straight from the battery and not through 38 year old wiring] solved the problem for me

  11. #11
    1000+ Posts Wildebeest's Avatar
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    Tom,
    Check that the GT Bosch coil isn't meant for a ballast resistor type ignition. Very rare that 504's had this.

    Try a new ignition condenser.

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    Fellow Frogger! Tom_95's Avatar
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    Quote Originally Posted by Wildebeest View Post
    Tom,
    Check that the GT Bosch coil isn't meant for a ballast resistor type ignition. Very rare that 504's had this.

    Try a new ignition condenser.
    Well, as I previously mentioned, I could try the coil on my parts car and see if I notice a difference...

  13. #13
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    I put the wrong coil on my 504 once and it cooked the points. But if the coil on the parts car looks genuine it should be ok.

  14. #14
    Fellow Frogger! Tom_95's Avatar
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    Well, what kind of coil should it have? Because if the one on my car is wrong it can't be doing it any good; In saying that, the GT40 looks like it has been on their for quite some time...

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    The code is on the bottom and I forget what it should have - someone else will know. I've just accessed a green Ducellier 504 coil for my 203. But you can't put a 203 coil on a 504. The points overheating takes place within a short time, perhaps 100k's. I was just talking about that recently with a 504 owner who did the same thing.

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