Generally easy starting when cold and hard when warm can be a couple of things. 1. Fuel filter or fuel pump causing low preasure--check with gauge. 2. Fuel injectors dirty because EFI adds extra fuel to when cold--clean them. --Clean with tool thing and compressor: https://www.youtube.com/watch?v=bKGI9N_yWd0#aid=P-7g8avjiXM putting the cleaner in the tank often makes it worse. --Clean them out of the car--much cheaper: https://www.youtube.com/watch?v=7aT4S1lIBAY Search on you tube for other methods. --Fuel Injector Pigtail Wiring Connector Plug 83-91 VW Vanagon T3 Transporter--go to junk yard like I did to get one: http://www.ebay.com/itm/Fuel-Injector-Pigtail-Wiring-Connector-Plug-83-91-VW-Vanagon-T3-Transporter-/351008673391 --VOLKSWAGEN VANAGON Standard Motor Fuel Injector O-Rings SK3 http://www.summitracing.com/parts/smp-sk3/applications/make/volkswagen/model/vanagon All that being said you probably have a leak in you fuel system like o-ring, stuck open injector hoses return or ! Fuel pressure regulator do test bellow ! http://www.ehow.com/how_7300305_test-fuel-injection-pressure-regulator.html I don't think it is your fuel pump if it initially comes up yo pressure when running. |
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