88 flooding
Thread Starter
Instructor
Joined: Nov 2016
Posts: 137
Likes: 10
From: Southern nh
88 flooding
There’s an 88 for sale near me, owner says it floods out after running for 30seconds. Could this be anything but a computer malfunction? I’ve only had an lt1 and a 327... it’s cheap enough but I don’t want it if it needs a part I’ll never find... any insight appreciated!
Oil Producer
Joined: Apr 2014
Posts: 9,363
Likes: 2,734
no such thing as parts u cant find.
whats the ask and do u have a link?
if its "flooding" then a simple leakdown test will let u know what the issue is. just did it on my 86 and ordered new injectors. persoally i doubt that its "flooding"
whats the ask and do u have a link?
if its "flooding" then a simple leakdown test will let u know what the issue is. just did it on my 86 and ordered new injectors. persoally i doubt that its "flooding"
Last edited by VikingTrad3r; Feb 4, 2018 at 10:35 AM.
Thread Starter
Instructor
Joined: Nov 2016
Posts: 137
Likes: 10
From: Southern nh
Thread Starter
Instructor
Joined: Nov 2016
Posts: 137
Likes: 10
From: Southern nh
Race Director
Joined: Oct 2008
Posts: 17,982
Likes: 1,072
From: Lansing MI
I am certain that you mean testing if the fuel system will hold pressure.
Pro
Joined: Sep 2014
Posts: 588
Likes: 35
From: Smithfield VA
You can find any part you need for that car. Advance Auto, O'Reilly's, Napa, Pep Boys, and so on, all stock parts for a 1989 Corvette. And if they don't have the part, there are a decent amount of businesses that part-out C4 Corvettes.
As for why or if it's flooding out, the first step is pulling the trouble codes and looking them up, if there are any codes given. If no codes, then the normal trouble shooting steps should be followed (check fire, check fuel pressure, bla bla bla)
As for why or if it's flooding out, the first step is pulling the trouble codes and looking them up, if there are any codes given. If no codes, then the normal trouble shooting steps should be followed (check fire, check fuel pressure, bla bla bla)
Last edited by 1stVetteFinally; Feb 4, 2018 at 10:59 AM.
Oil Producer
Joined: Apr 2014
Posts: 9,363
Likes: 2,734
@ pdt.
yes and yes. you can isolate your injectors to perform an injector leakdown test by:
-install fuel pressure gauge
-remove the vac line from the fpr. i usually put a piece of white paper under the spout/nipple
- setup vice grips on sending and return line...wrap tonnes of black tape or use a thick rag btwn the jaws and the rubber. preset them so all u need to do is grip them and squeeze.
-reach in and put key on ign off
- quickly pinch lines immediately following the sound of the fuel pump stopping its pressure cycle.
- if no gas comes out of the fpr....and no gas pools anywhere externally....and your pinch job is effective....then you are isolating the one place you cannot see....your injectors.
thats how i do leakdown tests on injectors.
of the 3 vettes i have, 2 had leaking injectors. one was real (!!) bad. created long crank. the other one wasnt so bad.
VT.
yes and yes. you can isolate your injectors to perform an injector leakdown test by:
-install fuel pressure gauge
-remove the vac line from the fpr. i usually put a piece of white paper under the spout/nipple
- setup vice grips on sending and return line...wrap tonnes of black tape or use a thick rag btwn the jaws and the rubber. preset them so all u need to do is grip them and squeeze.
-reach in and put key on ign off
- quickly pinch lines immediately following the sound of the fuel pump stopping its pressure cycle.
- if no gas comes out of the fpr....and no gas pools anywhere externally....and your pinch job is effective....then you are isolating the one place you cannot see....your injectors.
thats how i do leakdown tests on injectors.
of the 3 vettes i have, 2 had leaking injectors. one was real (!!) bad. created long crank. the other one wasnt so bad.
VT.
Last edited by VikingTrad3r; Feb 4, 2018 at 12:42 PM.
Oil Producer
Joined: Apr 2014
Posts: 9,363
Likes: 2,734
if the injectors were stuck open due to varnish or particulate matter the car would have a LONG crank and would have fuel in the oil.
as mentioned, performing a simple leakdown test as above will tell u if your injectors are suspect.
if the ecm is suspect of sending a constant "open" signal to the injectors a simple aet of noid lights on any injector will tell u.
Last edited by VikingTrad3r; Feb 4, 2018 at 12:48 PM.
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Race Director
Joined: Oct 2008
Posts: 17,982
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From: Lansing MI
@ pdt.
yes and yes. you can isolate your injectors to perform an injector leakdown test by:
-install fuel pressure gauge
-remove the vac line from the fpr. i usually put a piece of white paper under the spout/nipple
- setup vice grips on sending and return line...wrap tonnes of black tape or use a thick rag btwn the jaws and the rubber. preset them so all u need to do is grip them and squeeze.
-reach in and put key on ign off
- quickly pinch lines immediately following the sound of the fuel pump stopping its pressure cycle.
- if no gas comes out of the fpr....and no gas pools anywhere externally....and your pinch job is effective....then you are isolating the one place you cannot see....your injectors.
thats how i do leakdown tests on injectors.
of the 3 vettes i have, 2 had leaking injectors. one was real (!!) bad. created long crank. the other one wasnt so bad.
VT.
yes and yes. you can isolate your injectors to perform an injector leakdown test by:
-install fuel pressure gauge
-remove the vac line from the fpr. i usually put a piece of white paper under the spout/nipple
- setup vice grips on sending and return line...wrap tonnes of black tape or use a thick rag btwn the jaws and the rubber. preset them so all u need to do is grip them and squeeze.
-reach in and put key on ign off
- quickly pinch lines immediately following the sound of the fuel pump stopping its pressure cycle.
- if no gas comes out of the fpr....and no gas pools anywhere externally....and your pinch job is effective....then you are isolating the one place you cannot see....your injectors.
thats how i do leakdown tests on injectors.
of the 3 vettes i have, 2 had leaking injectors. one was real (!!) bad. created long crank. the other one wasnt so bad.
VT.
I was just checking because "leakdown" testing generally means cylinder pressure leakdown. Obviously that is something totally different.