[urq] Re: Have you Replaced Injectors - long cranking, hard starting

[Phil Payne]

> You need to remove all the injectors and after operating them as in a spray
> pattern test, fuel can be seen weeping up the side of one or more.  Common
> problem on injectors on 5ktq's with over 100kmi on injectors.  That along
> with the o-ring seals that are usually brittle from heat and age you have
> air leaks plus a lean condition on startup.

Dryness test - with everything cold, get them to spray and watch for a darkening tip.

Another key sign is a sudden drop in oil level on the first long journey for a while.  The
scenario is that the engine is burning oil to perhaps a limited degree - short journeys cause
repeated pressurisation of the system and a little leakdown each time - the fuel runs down the
bores and into the sump.  The first time the oil gets really hot, the fuel fractions evaporate
and the oil level seems to drop remarkably.

--
  Phil Payne
  http://www.isham-research.com
  +44 7785 302 803