123 Install Today - GETTING CLOSER..., PROGRESS: BAD MPS |
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123 Install Today - GETTING CLOSER..., PROGRESS: BAD MPS |
FlacaProductions |
Dec 14 2023, 09:50 AM
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#1
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Senior Member Group: Members Posts: 1,733 Joined: 24-November 17 From: LA Member No.: 21,628 Region Association: Southern California |
74 2.0 D-Jet
Heading to the garage now to start the install and my main, unresolved-in-my-brain question is if i need to hook up the vacuum line that is on my current stock distributor, on the 123. |
Dave_Darling |
Dec 20 2023, 02:56 PM
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#2
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914 Idiot Group: Members Posts: 15,047 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
My suggestions:
Go back to the beginning. Double check the fan marks against the flywheel mark. Use a paint pen on the nearest fan blade to indicate TDC and one to indicate stock timing. Also mark the front of the fan pulley so you have a quick reference and don't have to unplug the timing hole. (It's just paint; it shouldn't affect anything.) Set up the engine to TDC, and double check the rocker arms for cylinder #1 so you know you are at TDC#1. Both rocker arms will have a bit of slack. (Assuming solid lifters and stock pushrods.) Set static timing at 0 degrees, and with 0 advance. It's not the correct timing, but that doesn't matter at this point--you're just trying to get the thing to run. Verify that the engine starts. If it starts but idles super low, you can advance the timing until it idles OK. Grab a spare spark plug and tape it where it's visible and the end or the threads are grounded. Start the engine, then (USING INSULATED PLIERS, DON'T ASK HOW I KNOW THIS) disconnect the #1 plug wire from its spark plug and plug it into the extra one above. Look to see if it's sparking. Then plug the wire back onto the #1 plug. Repeat for 2, 3, and 4. Make sure all of them have spark. Also make a note if any one or more of those don't have an effect on how the engine idles when you unplug them! Shut the engine down. Remove the distributor rotor or unplug all of the plug wires. Grab a fire extinguisher, and four empty jars. Remove all four injectors from the intake runner pipes, while leaving them connected to the fuel rail. Stick each injector into one jar. Go crank the starter for ~10 seconds, then come back and look at how much fuel is in each jar. Ones that have less fuel (or empty) indicate problems. If you can have someone else crank the starter while you look at the injectors in the jars, you can also see if they are actually spraying or only dribbling. You do want spray. Once those are done, you know you have fuel and spark, and you know that your timing and TDC marks are as accurate as you can get them without pulling the engine apart. --DD |
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