Question about Mercury Cougar
My guess would be a defective fuel pressure regulator, not 100% but i have seen that before ,usually a bad regulator will usually produce a rich (gas) smell and or very white thick exhaust smoke(raw unburned gas),almost the same appearance as smoke from a blown headgasket, and also usually if you hold the thottle to the floor,and crank it for several secs it sould start,if not another alteritive to getting it to start(as to check for white smoke) is to pull the fuel pump relay to stop fuel flow long enough to get it to fire,once it does replace fuel relay,and crank holding it to floor tiil it starts,hopefully this will help you ,good luck
Posted on Dec 12, 2008
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Posted on Jan 02, 2017
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