think I have a fuel system issue.

Post Sun Sep 10, 2017 9:20 pm

As above, I serviced the injectors a few weeks ago and I've started getting some issues with the fuel system. Firstly it now takes 10 seconds to start the engine from cold, before the injector overhaul it was pretty much instant. Starts from warm instantly.
Secondly I get an intermittent cut out soon after starting as if fuel isn't getting to the engine. It gives away after a single occurrence.

Could be loads of things but I wondered if anyone had advice on where to start? Think it's fuel rather than ignition.
Thanks guys.

Post Sun Sep 10, 2017 10:13 pm

This sounds like a leaking injector. Slow cold starting because there's no residual fuel pressure, and then cutting out as the fuel leaked into the inlet manifold gives the engine too much fuel, not too less.
15 pound ebay fuel pressure gauge and a hose clamp is the way to check.

Post Sun Sep 10, 2017 10:38 pm

Sounds a lot like my issue: http://www.e30zone.net/modules.php?name ... highlight=

Not disturbed some wiring after the refit?

Post Mon Sep 11, 2017 9:17 am

did you overhaul them or were they done by pro?

Post Mon Sep 11, 2017 10:01 am

There's an assumption among many that new components are reliable components. Engineers know that most components follow the so called bath tub reliability curve.

Post Tue Sep 12, 2017 12:50 am

aimlessrock wrote:did you overhaul them or were they done by pro?

They were done by injectortune.

Post Tue Sep 12, 2017 6:53 pm

Have you verified that all the injectors are firing, screwdriver or similar on injector, put your ear on the other end & hear a loud clicking as they turn on & off, simple but reliable. Injectortune himself talks about testing for this after a refurb as they can stick, a sharp tap is his recommended solution IIRC.

Post Fri Sep 15, 2017 12:29 am

minesapint wrote:Have you verified that all the injectors are firing, screwdriver or similar on injector, put your ear on the other end & hear a loud clicking as they turn on & off, simple but reliable. Injectortune himself talks about testing for this after a refurb as they can stick, a sharp tap is his recommended solution IIRC.

Thanks I'll try that.

Post Thu Sep 28, 2017 9:49 pm

Thanks guys, seems the problem has sorted itself out after giving it a blast last weekend. All the injectors were firing, no apparent leaks, the problem of a single blip in fuel supply 30s after first hard acceleration after starting her up went after a day or so. Maybe she was just punishing me for ignoring her for 3 weeks!