Alfa Romeo Spider 1750 Iniezione won't run (US Spec, Spica injected 1969) - Page 2 - Alfa Romeo Bulletin Board & Forums
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post #16 of 24 (permalink) Old 07-02-2019, 09:31 AM
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I just read your other thread about the fast idle. I think that you should go back to step 1 in the tuning process and do everything over again. My guess is that the long and short rods are not set correctly, or have the plastic rod ends cracked and the rod threads slipping in the rod ends.

About 4mm of spacers under the T/A should bring it back into specification for the 1969 model injection pump.

If you don't have the factory Spica manuals and other tech data, let me know and I can send electronic copies of them to you. They are English language versions, however.

John Stewart
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post #17 of 24 (permalink) Old 07-02-2019, 09:54 AM Thread Starter
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@Roadtrip. Thank you for your reply!
The plastic ends are not cracked or worn out but we will be re-doing all that just to be sure there are no other issues.
Good to know that 4mm is what we need for the TA to be Factory like! We were trying to figure that out.

We do have guides and Books from Wes, used Info that you provided and original shop books and Fuel Injection guides. However, it would be great if you could send us the literature that you have because maybe there is more helpful info that we don't have yet.

Thanks again!

Dennis

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Alfa Romeo Spider, 1750 Iniezione w/ Spica Injection built in 1969.
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post #18 of 24 (permalink) Old 07-04-2019, 05:23 AM
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Each TA height may be different between cars. The height needs to be set after the car is at running temp. The clearance between the long rod arm at the pump, while the rod is disconnected from the throttle arm, should be about .019 inches of clearance i believe. Good Luck
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post #19 of 24 (permalink) Old 07-04-2019, 03:54 PM
Have you tried spraying starter fluid after the initial start? If it continues to run then it would suggest fuel starvation. I would disconnect the fuel return line at the filter and verify that there is fuel flow.

From memory ( ie, suspect) the '69 SPICA pump fuel cut off screw is capable of being forced beyond the yoke. When that happens no amount of adjusting will change the fuel. You might want to check that.

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Last edited by gprocket; 07-04-2019 at 04:01 PM.
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post #20 of 24 (permalink) Old 07-04-2019, 07:22 PM
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What about compression in your motor. I'm just saying check to see if your rings are no good. Otherwise if it's all on you to set this injection up you picked a doosie to learn on. I have the exact same system and just lucky for me I guess it got set up by a professional. Once it set you can just forget about it cause it works great. Don't forget about the oil filter for the Fuel injection. Gotta change it every oil change.
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post #21 of 24 (permalink) Old 07-07-2019, 06:01 AM
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Just a thought; could the fuel pump be installed backwards? I think the flow is directional but not 100% sure?

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post #22 of 24 (permalink) Old 07-07-2019, 06:12 AM Thread Starter
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Thanks all, we got it figured out. I'll explain later.

Dennis
Alfa Romeo Spider, 1750 Iniezione w/ Spica Injection built in 1969.
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post #23 of 24 (permalink) Old 07-13-2019, 04:18 AM
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Quote:
Originally Posted by 1750Iniezone View Post
Thanks all, we got it figured out. I'll explain later.
Highly curious as to what the issue turned out to be!
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DrE--
counting backwards:
'78 Spider (current daily)
'66 1600 GTV (Current Upscale Yard Art)
'69 1750 GTV (my favorite, sold in '80)
'65 1300 GT Junior (my first, parted out in '76)
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post #24 of 24 (permalink) Old 07-21-2019, 05:27 AM
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I/m curious too. Please fill us in.
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engine fault, help me please, iniezione, spica fuel injection, spider 1969

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