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12-16-2018, 01:49 AM | #1 |
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Join Date: Jan 2007
Location: Waldorf,MD
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87 R30 running rich, any suggestions
I have an ‘87 R30 dually,454,400, fuel injected(tbi) . When I start it up it the exhaust gas smell is so rich that it’ll make your eyes water. Any suggestions? I’ve already changed the O2 sensor, throttle body gaskets and coolant sensor.
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87 Crewcab Dually 66 Cadillac Sedan deVille 55 Chevy Belair 33 Plymouth sedan 03 S-10 86 S-10 Blazer _____________________________________________ IG drivewaycustoms |
12-16-2018, 02:47 AM | #2 |
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Join Date: Jun 2005
Location: Vancouver
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Re: 87 R30 running rich, any suggestions
Map sensor? A very plugged air filter? Spark plugs all look the same? Could take temp reading alongthe exhaust manifolds to see if all the cylinders are firing.
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12-16-2018, 11:59 AM | #3 |
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Re: 87 R30 running rich, any suggestions
Thanks. I’ll check for the sensor and check the cylinder temps. The air filter is new.
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87 Crewcab Dually 66 Cadillac Sedan deVille 55 Chevy Belair 33 Plymouth sedan 03 S-10 86 S-10 Blazer _____________________________________________ IG drivewaycustoms |
12-16-2018, 01:06 PM | #4 |
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Location: ga
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Re: 87 R30 running rich, any suggestions
you need to check the fuel pressure regulator on the throttle body it will cause it to run rich and check the t/b gasket and t/b for any vacuum leaks .
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4x4k30 if trouble was money i would have plenty Last edited by 4x4k30; 12-16-2018 at 01:11 PM. |
12-16-2018, 10:24 PM | #5 |
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Join Date: Jan 2007
Location: Waldorf,MD
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Re: 87 R30 running rich, any suggestions
Thanks, I’m gonna pick up a rebuild kit, they’re cheap and shouldn’t take long to do.
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87 Crewcab Dually 66 Cadillac Sedan deVille 55 Chevy Belair 33 Plymouth sedan 03 S-10 86 S-10 Blazer _____________________________________________ IG drivewaycustoms |
12-17-2018, 02:22 PM | #6 |
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Join Date: Mar 2003
Location: Colfax-California
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Re: 87 R30 running rich, any suggestions
Vacuum line to the MAP sensor...check for cracks. Also the water base plate under the TBI was famous for blowing the gasket out on the vacuum side of the EGR port
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