 1974 1.8L engine fast idle then stalls, Fuel injection issues |
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| tshih914 |
 Feb 19 2023, 11:45 PM
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Member  Group: Members Posts: 79 Joined: 17-July 05 From: central NJ Member No.: 4,426  |
My 1.8L 914-4 with stock Bosch L?-Jetronic FI after being stored several years started to develop a hard to start problem. When finally started would stall when I give the gas pedal any input to raise the revs. I suspect there was some kind of intake air leak and while fiddling around had a backfire which blew the AF meter which I had Pelicanparts repaired. After replacing the fuel lines with the stainless ones from Tangerine Racing and flushing out the fuel system with Techron the engine started to run normally for a short time. Now the engine can be started and fast idles at 3000 rpm but again any input to rev up the engine results in stalling. The idle adjustment screw at the base of the throttle housing is fully closed. Any suggestions on how to fix?
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Posts in this topic
tshih914 1974 1.8L engine fast idle then stalls Feb 19 2023, 11:45 PM
wonkipop mangled air filter makes no difference to this sce... Mar 4 2023, 02:57 AM Van B Thanks for the vote of confidence @wonkipop . I ... Mar 4 2023, 09:42 AM
wonkipop
Thanks for the vote of confidence @[url=http://w... Mar 4 2023, 01:05 PM tshih914
[quote name='Van B' post='3062478' date='Mar 4 20... Mar 4 2023, 01:15 PM wonkipop
[quote name='wonkipop' post='3062530' date='Mar 4... Mar 4 2023, 01:31 PM Van B @tshih914 . You should post a video so we can see ... Mar 4 2023, 09:44 AM tshih914
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 4 2023, 12:46 PM wonkipop
[b]@[url=http://www.914world.com/bbs2/index.php?... Mar 4 2023, 01:27 PM wonkipop @tshih914
where i would want you to go next is t... Mar 4 2023, 01:42 PM Geezer914 The AFM could be bad. Send it to Fuel Injection C... Mar 4 2023, 01:45 PM wonkipop
The AFM could be bad. Send it to Fuel Injection ... Mar 4 2023, 01:52 PM wonkipop if this is what you are talking about @tshih914 ... Mar 4 2023, 01:55 PM wonkipop @[url=http://www.914world.com/bbs2/index.php?showu... Mar 4 2023, 02:31 PM nihil44
I have removed and replaced the AFM many tim... Mar 5 2023, 12:29 AM wonkipop
I have removed and replaced the AFM many ti... Mar 5 2023, 02:08 AM wonkipop i think what i am trying to say @nihil44
is this... Mar 5 2023, 03:03 AM wonkipop further thought @nihil44 and [b]@[url=http://ww... Mar 5 2023, 03:37 AM Geezer914 Go to Bowlsby's web site and print his wire di... Mar 5 2023, 06:00 AM Van B Wonkipop. I agree that the TPS may be an issue or ... Mar 5 2023, 10:33 AM tshih914
Wonkipop. I agree that the TPS may be an issue or... Mar 5 2023, 10:12 PM wonkipop
Wonkipop. I agree that the TPS may be an issue or... Mar 6 2023, 03:30 PM tshih914 Thanks wonkipop for saving my bacon and not butche... Mar 7 2023, 08:39 PM tshih914
Thanks wonkipop for saving my bacon and not butch... Mar 7 2023, 09:03 PM wonkipop nuts do not release harness plug.
this is how you... Mar 5 2023, 11:34 PM wonkipop take a photo of the ECU pins and harness plug when... Mar 5 2023, 11:39 PM wonkipop thats great about the tps making the clicking soun... Mar 7 2023, 11:24 PM bob164 Jeff Bowlsby's excellent website has a "9... Mar 8 2023, 01:56 AM wonkipop ah good.
@bob164 has given you the links.
in ca... Mar 8 2023, 03:52 AM wonkipop by the way i think i have had a thought about how ... Mar 8 2023, 04:45 AM tshih914 I tried to check the wires from the throttle valve... Mar 8 2023, 05:53 PM tshih914 Between pins #3 Mar 8 2023, 05:54 PM tshih914 testing pins #18 Mar 8 2023, 05:58 PM wonkipop
you operate the throttle while doing the test.
... Mar 8 2023, 07:17 PM tshih914 [quote name='wonkipop' date='Mar 8 202... Mar 8 2023, 08:38 PM wonkipop @Van B
i spoke to mike this morning.
as i though... Mar 8 2023, 07:46 PM Van B
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 8 2023, 09:19 PM wonkipop here is a y t vid i came across a few years back o... Mar 8 2023, 08:55 PM tshih914
here is a y t vid i came across a few years back ... Mar 9 2023, 06:40 PM wonkipop CHT
cylinder head temp sensor.
after that pull ... Mar 9 2023, 07:57 PM tshih914 @wonkipop
The ECU was not left dangling loose in... Mar 10 2023, 08:54 PM wonkipop
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 10 2023, 10:05 PM Van B Wonkipop, you meant open on the AAV when you put i... Mar 9 2023, 09:12 PM wonkipop
Wonkipop, you meant open on the AAV when you put ... Mar 9 2023, 09:31 PM wonkipop @tshih914
you might wonder why i am touchy about... Mar 11 2023, 01:56 AM StarBear :popcorn: Mar 11 2023, 07:41 AM Van B The ECU is very obviously not mounted to a rubber ... Mar 11 2023, 08:29 AM tshih914
The ECU is very obviously not mounted to a rubber... Mar 11 2023, 01:03 PM tshih914
The ECU is very obviously not mounted to a rubbe... Mar 11 2023, 01:59 PM tshih914
[quote name='tshih914' post='3064219... Mar 11 2023, 02:42 PM StarBear Might want to squirt a few drops of silicone spray... Mar 11 2023, 02:23 PM wonkipop ok @tshih914 .
thats good affirmation re the AAV... Mar 11 2023, 05:41 PM StarBear AAV FS in classified FS/WTB forum, as Van B highli... Mar 11 2023, 06:08 PM wonkipop @tshih914
you mean this arrowed.
its just an eng... Mar 11 2023, 06:30 PM Van B Fixing the AAV is not going to make the car take t... Mar 11 2023, 07:27 PM wonkipop
Fixing the AAV is not going to make the car take ... Mar 11 2023, 08:58 PM Van B Likewise, the CHT will not cause the car to die wh... Mar 11 2023, 07:39 PM wonkipop these are the test values for the CHT.
again from ... Mar 11 2023, 09:15 PM technicalninja
Think you have it backwards...
With NTC thermist... Mar 11 2023, 09:40 PM wonkipop
Think you have it backwards...
With NTC thermis... Mar 11 2023, 10:12 PM tshih914
Think you have it backwards...
With NTC thermis... Mar 11 2023, 10:17 PM wonkipop @Van B
this is his report that interested me.
i... Mar 11 2023, 10:10 PM Van B I’m sorry, but it seems like everyone is forgett... Mar 11 2023, 10:41 PM wonkipop
I’m sorry, but it seems like everyone is forget... Mar 11 2023, 11:53 PM Van B After watching the video of the car running, it’... Mar 11 2023, 11:06 PM technicalninja just quickly looked through this thread.
I have UB... Mar 12 2023, 12:13 AM wonkipop @tshih914
yeah that link is making me sign into ... Mar 12 2023, 12:17 AM technicalninja And wait, there's more...
I was fighting bad ... Mar 12 2023, 12:31 AM Van B Regarding the AAV heating element. Based on your e... Mar 12 2023, 12:44 AM wonkipop @[url=http://www.914world.com/bbs2/index.php?showu... Mar 12 2023, 01:13 AM technicalninja I didn't know "rebuilt" were even av... Mar 12 2023, 01:15 AM wonkipop @technicalninja
i'm digesting your comments.... Mar 12 2023, 01:18 AM wonkipop @technicalninja - yeah i just read through your b... Mar 12 2023, 01:29 AM technicalninja But wait, there's more...
I've found huge... Mar 12 2023, 01:37 AM wonkipop
But wait, there's more...
I've found hug... Mar 12 2023, 01:46 AM tshih914 My fuel is OK as I have been very mindful as a che... Mar 12 2023, 09:26 AM wonkipop
My fuel is OK as I have been very mindful as a ch... Mar 12 2023, 12:39 PM technicalninja
[b]@[url=http://www.914world.com/bbs2/index.php?s... Mar 12 2023, 01:48 AM wonkipop
[quote name='wonkipop' post='3064439' date='Mar 1... Mar 12 2023, 02:07 AM wonkipop here you go mate. @technicalninja
i found it.
y... Mar 12 2023, 02:22 AM Geezer914 Not to be redundant, but did you do a smoke test a... Mar 12 2023, 05:55 AM technicalninja Smoke test is a good idea at this point.
I had on... Mar 12 2023, 12:55 PM wonkipop @technicalninja
i just watched his 7 min film.
... Mar 12 2023, 01:35 PM wonkipop @[url=http://www.914world.com/bbs2/index.php?showu... Mar 13 2023, 07:33 PM Van B Too be clear fellas, the injectors don’t have to... Mar 13 2023, 09:49 PM wonkipop
Too be clear fellas, the injectors don’t have t... Mar 14 2023, 03:07 AM wonkipop
Too be clear fellas, the injectors don’t have t... Mar 14 2023, 02:38 PM wonkipop i am actually interested in @tshih914 's car... Mar 14 2023, 03:25 AM tshih914 i think he needs to tell us more about this car.
w... Mar 14 2023, 04:45 PM wonkipop @tshih914 .
cal tech man. i'm impressed.
and... Mar 14 2023, 07:56 PM tshih914 I started to follow your test and have posted some... Mar 18 2023, 11:42 AM Jason74914 Are you using factory high pressure fuel pump or s... Mar 18 2023, 03:49 PM wonkipop
Are you using factory high pressure fuel pump or ... Mar 18 2023, 04:11 PM tshih914 The green hose was connected during the whole time... Mar 18 2023, 04:38 PM wonkipop
The green hose was connected during the whole tim... Mar 18 2023, 04:43 PM Jason74914 Just saw your last posted. Inability to restart af... Mar 18 2023, 03:55 PM wonkipop @tshih914 .
the point is you are making progress.... Mar 18 2023, 04:50 PM wonkipop @tshih914
watched a couple of the other films wh... Mar 18 2023, 07:29 PM technicalninja I just take the black plastic top off of the afm t... Mar 19 2023, 10:16 AM wonkipop
I just take the black plastic top off of the afm ... Mar 19 2023, 02:53 PM  |
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