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1990 Bonneville won't start when cold but runs fine when hot plug in block heater or heated garage?
Wiki User
∙ 13y ago
There are a couple possibilities:
Start with a fuel line de-icer in case you have a little water in the fuel and it's freezing. Water builds up from condensation, much the same as water builds up around your glass when it's hot in the summer. Gasoline manufacturers do NOT put water in your fuel, no matter what your "expert" friends say.
If that doesn't help, try a tune-up. Plugs & wires can sometimes help by giving a hotter spark. Starting cold is difficult on your engine and you need to make sure it has all the help you can give it.
Last, if nothing else helps, check the compression. If compression is low the engine will be difficult to start and nearly impossible when it's cold.
Wiki User
∙ 13y ago
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