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| chipp |
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hey all i have recently put a 250 efi xflow motor and c4 into my landcrusier i have a few problems
1st is when i start it it revs up hard i have the idle screw right in i cant pick up any air leaks 2nd when i took it for a spin around the yard it idles like it has a big lumpy cam when in drive 3rd it is blowing black smoke like unburnt fuel smoke any input would be awsome i just wanna get out in the bush again with my new motor |
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| lukey1990 |
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Timing issue?
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| cjh |
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Have you got the correct dip stick.....they had an orange rubber seal on the stick.
Is the airflow meter working properly??? Is the coolant temp sensor OK????
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| chipp |
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i have a new temp sensor and the airflow metre seems to work ill check the dipstick
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| MAD |
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Also check the rocker cover gasket and the EGR valve for leaks.
ANY vacuum leak on the XF EFI system will make it run really really rich. |
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| Nigel |
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They use an ISC on the rocker cover - sounds like it has issues.
Throttle Position Sensor perhaps?- would explain the black smoke |
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| MoffatGhia |
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easiest fix? ditch the EFI and run a carby...... XF EFI is a PITA beyond belief.....
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| fairlane6970 |
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Had a similar problem with my zl efi coupla years back and knowing nothin about efi i asked a mate who said it was the fuel regulator which is on the firewall end of the fuel rail i bought a 2nd hand one (cheap as) fitted it up and sweeet problem solved!
 - apart from a cracked fuel rail, big hands no room no patience  but give it a go mine just went no warning
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