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+--- Forum: 2 - Emission / Fuel Systems (http://www.deloreans.co.uk/forum/forumdisplay.php?fid=14)
+--- Thread: Fuel pressure testing (/showthread.php?tid=570)
Fuel pressure testing - Sirolf - 02 May 2007
Hi guys
On another D i'm working has the problem to accelerate very badly.
Feels like a incorrect fuel pressure, no vacuumleak cause the idle is a steady 800.
I hooked a gauge in the fuel line going to the CPR. What pressure exist here?
I'm reading nothing... Frowner
Think the Fuel Distributor is shot..
Thanks...
Greets Floris
- NickT - 03 May 2007
Are you a paid member of the "De Lorean Owners CLub UK" ?
I've written a full fuel injection pressure test procedure for the club magazine.
Ask Mike Bosworth (bozzzy) for a back copy when you join.
Cold CPR Pressure - depends on temp of the CPR
Warm CPR Pressure - 3.4 to 4 bar roughly.
Check the routing of the vacuum pipes first to/ from the thermo-vac switch as chances are the piping to the CPR and the Spark Distributor will be swapped over.
NickT.
- Sirolf - 04 May 2007
No, i'm not a paid member..
I checked pressure yesterday..more than enough.
Adjusted air/fuel mixture to its best..
But still no power enough when driving, injectors though don't show
a nice enough spray pattern..does this influence performance a lot?
- NickT - 05 May 2007
Have you checked the vacuum pipe routing?
There should be a diagram on the underside of the engine cover.
Poor injector spray pattern can account for a sluggish response but 9 times out of 10 a clean can restore them.
NickT.
- Sirolf - 06 May 2007
Rebuilt the VOD from ground up yesterday using new vacuum hoses and
o-rings. Set emissions to its best... Somewhat better.
Stiil spray pattern is aweful, so cleaning them is next to see if it helps,
otherwise replacing them.
- NickT - 06 May 2007
I have a bosch k-jetronic injector spray/ pressure tester.
I could test/ clean them for you but you will have to pay return postage.
I think new ones are £35 each.
Standard B28E fuel injectors. Bosch (014) 0437 502 022
Book specs:
Break pressure >3.5bar
Rest pressure min 3.3 bar
NickT