1995 Isuzu Rodeo Question grey smoke out exhaust

1995 ISUZU RODEO
249,256 MILES • 6 CYL • 2WD • AUTOMATIC
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JERRYLHUSSEY
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my rodeo is blowing grey smoke out the exhaust. i didnt have this problem until replacing the ignition control module and ignition coil. at the same time i replaced the valve cover gasket on the driver side. now the engine hesitates and blows black and grey smoke. what could be the cause?
Dec 24, 2009 at 9:29 AM
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IMPALASS
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Hello

To better assist you is your model the LS or S and what is the engine size in liter.

Dec 24, 2009 at 10:29 AM
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JERRYLHUSSEY
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it is a 3.2L 24 valve V6 it is the 95 rodeo LS
Dec 24, 2009 at 10:52 AM
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IMPALASS
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Hello

Thanks for the info

Grey usually indicates brake fluid.

Since it just happened you may have a hose or check valve on backwards.

When you changed the valve covers did you disconnect the power brake unit vacuum hose? It has a one way check valve in it. Check the vacuum hose (with check valve) from power brake unit. Note installed direction for proper check valve operation (arrow on hose label faces engine).

Let me know
Dec 24, 2009 at 11:21 AM
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JERRYLHUSSEY
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no i did not disconetc the vacum hose from the brake unit. i did disconnect the plugs from the fuel injectors to loosen the wiring harness. also removed the throtle body and assosiated hoses
Dec 24, 2009 at 11:35 AM
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JERRYLHUSSEY
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it also has black soot blowing out the tail pipe on the ground
Dec 24, 2009 at 11:36 AM
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IMPALASS
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Hello

While I look at the manual please disconnect the brake booster hose at the manifold and check for brake fluid

Also check out the injector pulse kit from Auto Zone and ensure you are getting a good fire at each injector

Are any of the spark plugs wet with fuel indicating that cylinder is not firing
Dec 24, 2009 at 12:19 PM