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SPI Tuning Modifying the Split Port Injection 2.0L.

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Old 07-05-2008, 12:58 PM   #1
Fumes
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Default Hard Starting When Warm

I have a 2001 Focus with 2.0 SPI and it has gotton hard to start when it is warm only. After sits over night it start nearly perfect except sometimes it take a bit extra to kick but idles smooth.

But after it has run for 5 or 10 minutes and then stopped for a minute or more, it becomes hard to start and idles rough for 30 seconds and then it is OK.

I have changed the injectors, fuel filter, plugs and wires. Not sure where to go from here.
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Old 07-06-2008, 12:27 AM   #2
ladybug04
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Default Re: Hard Starting When Warm

try a seafoam treatment.
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Old 07-06-2008, 11:14 AM   #3
Gigaherz
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Default Re: Hard Starting When Warm

does your coolant temp gauge seem to work fine?
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Old 07-09-2008, 04:48 PM   #4
SkoitchFocus
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Default Re: Hard Starting When Warm

When was your last oil change, and how many miles are on the engine? You may want to try adding one of those oil treatments for worn engines.
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