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> Hard To Start, getting harder top start
mike the pipe
post Apr 27 2007, 07:36 AM
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My volvo 240 fuel injected car is becoming hard to start when cold,the electrics are ok but it seems not to be getting fuel.Is this likely to be the cold start jet needing cleaning or could it be the fuel metre system? I'm stuck in the middle of France and the garages here only seem to know how to repair French cars.
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Ryan 20
post Apr 27 2007, 03:33 PM
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Could be the thermal timer switch. What year is the car?
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mike the pipe
post Apr 28 2007, 01:52 PM
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1988
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Ryan 20
post Apr 28 2007, 07:39 PM
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That year should have a thermal timer switch check/replace that first It controls the cold start injector
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mike the pipe
post Apr 29 2007, 10:18 AM
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Thanks Ryan, will try that first and see how it fairs.
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mike the pipe
post May 10 2007, 11:19 AM
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That did the trick,got the thermal timer on line from uk, took me a while to find its location but now that its changed, car starts first time.
I have another problem however, I am loosing coolant from the expansion tank. It isn't leaking,seems to be blowing it out under pressure. The temperature guage always shows normal range,but I have to replace about three pints a day.
Any Ideas Anyone ?
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Ryan 20
post May 10 2007, 11:58 AM
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Maybe the expansion tank cap or small expansion tank hose.
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Steve T Slade
post May 10 2007, 06:49 PM
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Sometimes the radiator will develop pinholes that only leak under pressure. It is not enough to see and it gets burnt off quickly.
Do you detect any glycol smell near the radiator?

The same thing happened to me. It took about two months before I could find the leaks.

Steve
Selma, Nova Scotia
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mike the pipe
post May 11 2007, 09:45 AM
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Just put in a brand new radiator because that was where I thought the leak was going from. The expansion tank cap seems to fit very tightly and the hose isn't leaking. This is a real mystery.
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Ryan 20
post May 11 2007, 05:49 PM
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Did you check the two heater hoses behind the engine ? they can be hard to see
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mike the pipe
post May 12 2007, 01:29 PM
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Yes I have, in fact had to disconnect the top one to get to the thermal timer. No, the leak seems to be when the engine gets hot it blows through the expansion tank cap .Why should it do this ? Recently flushed the coolent completely and there is nothing in but water now, most of the anti-freeze had leaked away over time with constantly topping up.Fortunately I put my car away in the barn every night.
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Ryan 20
post May 12 2007, 03:03 PM
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If its blowing out the cap than maybe the cap is no good.
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mike the pipe
post May 22 2007, 02:24 PM
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I just don't believe it ! thought I had cracked the hard to start problem by installing a new thermal timing switch,now after ten days it is doing exactly the same thing.Turn the key and it the engine tries to start but seems to have no fuel,then it kicks in and its ok as long as it isn't switched off for too long. If its the fuel pump, it would do it all the time,wouldn't it? Any help please, I'm scratching my head here.
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Ryan 20
post May 22 2007, 02:33 PM
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Does the fuel pump in the gas tank work ? Maybe replace fuel filter too.
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79 240
post May 24 2007, 04:37 PM
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You may want to do a compression check it is possible you have a head gasket going.
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mike the pipe
post Jun 14 2007, 03:08 AM
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Someone suggested bypassing the cold start sensor and joining the two pipes with a piece of copper tubing. Whow! did it start and how, the engine was racing like mad and it wasn't possible to control it with the idling control so that wasn't the answer. However in the process I found that I was getting no current to the cold sensor or to the cold injector. Why would this happen? Anyone. Obviously the sensor isn't sensing and the engine needs more air to start.
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