Engine first start attempt., Couple vacuum leaks, Finally adustable idle. |
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Engine first start attempt., Couple vacuum leaks, Finally adustable idle. |
Olympic 914 |
May 23 2017, 07:30 AM
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#1
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Group: Members Posts: 1,671 Joined: 7-July 11 From: Pittsburgh PA Member No.: 13,287 Region Association: North East States |
Engine first start, Fail.
Yesterday I made the first attempt at starting the engine since rebuild. I had put two gallons of 93 octane gas into the tank and the pump runs as it should when turning the key. I had a timer ready to perform the 20 minute cam break in. I was arrogant enough to believe that the engine would simply start when I finally tried it. WRONG. It caught for a few moments then died. And subsequent attempts gave no better of a response. I had turned the engine over with the coil disconnected to build up oil pressure before attempting the start. And thought I may have run the battery down some. Checking it showed 12.56v resting and 11.44 while cranking. I connected a big boat battery with jumper cables but still no start. It turns over and fires a couple times giving of puffs of exhaust, but does not catch and keep running. Pulled a FI hose and checked that I am getting gas, also pulled two plugs and they are wet with gas. I thought I may have flooded it so I put the battery charger on it and put it back in the garage. This morning I tried it again and the result was the same. It fires a couple times then just cranks. Everything is new. Cap and rotor, points condenser plug wires etc. injectors rebuilt buy Witchhunters , static timed when I put in the distributor. All new vacuum hoses, rebuilt MPS (set to 037 specs) ECU is an unknown but it worked when ran last (in ’89) all the wiring was carefully checked when installed Engine build is as follows. EA 1.7 engine built into a 2056 Using the djet FI with 2.0 parts, intake runners, throttle body, air cleaner, etc. HAM heads ported to RS+ and modified for the 2.0 runners Raby 9590 cam Guess I will start with rechecking the timing and go from there. |
76-914 |
May 23 2017, 02:33 PM
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#2
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,504 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Disconnect and plug all the vacuum lines except for the one to the MPS then start it. If it's normal then start plugging the hoses in, one at a time until you find the culprit. If it is still idling high after you've pulled & plugged all the lines check your MPS, the gasket on the oil refill tube and injector seals. (IMG:style_emoticons/default/beerchug.gif)
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Olympic 914 |
May 23 2017, 03:20 PM
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#3
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Group: Members Posts: 1,671 Joined: 7-July 11 From: Pittsburgh PA Member No.: 13,287 Region Association: North East States |
Disconnect and plug all the vacuum lines except for the one to the MPS then start it. If it's normal then start plugging the hoses in, one at a time until you find the culprit. If it is still idling high after you've pulled & plugged all the lines check your MPS, the gasket on the oil refill tube and injector seals. (IMG:style_emoticons/default/beerchug.gif) Removed and plugged the vacuum hoses one at a time, that didn't help. I remember having to make gaskets for the cold start valve so I removed that and although those gaskets looked good I made new ones and smeared a little Indian head gasket sealer on them. - no change. disconnected and plugged the decel valve, no change. Next I will take your suggestion and disconnect all the vacuum hoses and plug the ports. I checked the timing and the red mark @ 27 degrees was about 1 inch or so away (at 3000 rpm) from the notch. when I tried to bring it to the notch... Yep the RPMs increased. So I backed it off. The MPS was rebuilt with one of the Tangerine kits and set to the 037 specs but no harm in checking it again. It has to be a pretty big leak to be running at this rpms with the throttle plate closed. You would think it would be obvious. The plenum only has so many connections. wouldn't a bad injector seal only affect the one cylinder? It sounds good, no bad noises. I don't run it too long since I don't want to COOK this thing. Think I'll take the Dogs for a walk....... |
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