Mk4 xr3i mfi bad running
23-09-2018, 06:25 AM
#1
Mk4 xr3i mfi bad running
Got a problem with my 89 xr3i cab. 1.6 mfi . I think it’s running rich and it seems to not be getting enough air. If I pull the vacuum pipe off where the cold start valve is on the inlet manifold it runs a lot better due to sucking in more air. Anyone know what could be causing this please and how to resolve. Thanks!
23-09-2018, 03:59 PM
#2
PassionFord Post Troll
Mixture is probably out. Fuel pressure could possibly be poor.
Has it had a fuel filter recently? Always worth a punt for £20 and definitely wont do any harm
Has it had a fuel filter recently? Always worth a punt for £20 and definitely wont do any harm
23-09-2018, 05:52 PM
#4
PassionFord Post Troll
Have you had in on a gas analyser to actually check the mixture?
Could also be the WUR (warm up regulator) but without a fuel pressure gauge its pretty difficult to even do basic troubleshooting on the K-Jet system. Easy enough to make your own tho
Could also be the WUR (warm up regulator) but without a fuel pressure gauge its pretty difficult to even do basic troubleshooting on the K-Jet system. Easy enough to make your own tho
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