914 2.0 refuses to start |
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914 2.0 refuses to start |
Frank Lolkema |
Mar 28 2009, 05:40 AM
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#1
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Newbie Group: Members Posts: 7 Joined: 29-July 05 From: holland Member No.: 4,503 |
I have a problem with my ´73 2.0 with the original fuel injection that drives me crazy!
I have completely overhauled the engine. After putting it back in I can not get it to start with the starter motor. The motor crancks but it will not start. When I pull it with another car it will start instantly. Using jumper cables from a car that is running at 3500 rpm does not help. Here is what I have done so far: Replaced the battery with a new one; Checked all the wires and connections, everything is set up correctly and the connectors are all oke, I´ve used contactspray on all contacts; Replaced the spark plugs with new ones, left the new ones in, put the old ones in the caps and crancked the engine, all spark plugs give a good fat spark; Set the timing; Replaced the starter motor with a different one; Checked the ground strap from the gearbox the the chassis; Attached a starter cable from the gearbox directly onto the negative lead off the battery to elimanate ground strap problems; Checked the fuel injectors, they all inject fuel when the enige is crancked; Put in fresh new fuel; Airfilter is new; I really don´t know what else to try. When the engine runs, it runs perfectly, very strong, no smoke, no misfires, no strange noises. When I switch it of warm it also refuses to be started in the conventional way. I really don´t know what else to look for, it drives me crazy! (IMG:style_emoticons/default/headbang.gif) Anybody have an idea of what I can/should look for? Frank |
swl |
May 13 2009, 04:18 PM
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#2
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Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
I'm looking at your first post and you say it runs strong after start - that really doesn't sound like the MPS. A bad MPS would start showing itself through the different load conditions on the engine. If you have a spare then no harm in swapping it out. Be very careful with the electrical connectors. They can be really tight and it is very easy to damage the wiring harness.
There are two basic tests for the MPS. One is to draw a vacuum on it and see if the vacuum holds. The other is to check the impedance on the electrical connection. Check Richs comments above. Particularly the CHT and fuel pressure. Seems to fit your symptoms better than the MPS. |
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