cold start injector problem
09-01-2015, 09:43 AM
#2
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
How do you know?
Describe it to us. Especially what you are doing when you think it "should" activate, and what it is that tells you it isn't.
The CSI is only on during cranking. The CSI Timer will cut off the CSI a) if the engine is warm and b) after some (very short) length of cranking.
Of course, "hard starting" alone can be caused by so many things that it isn't diagnostic of anything, so I'm pretty sure you've got more.
Describe it to us. Especially what you are doing when you think it "should" activate, and what it is that tells you it isn't.
The CSI is only on during cranking. The CSI Timer will cut off the CSI a) if the engine is warm and b) after some (very short) length of cranking.
Of course, "hard starting" alone can be caused by so many things that it isn't diagnostic of anything, so I'm pretty sure you've got more.
09-01-2015, 09:56 AM
#3
Registered User
Thread Starter
Join Date: Mar 2014
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
How do you know?
Describe it to us. Especially what you are doing when you think it "should" activate, and what it is that tells you it isn't.
The CSI is only on during cranking. The CSI Timer will cut off the CSI a) if the engine is warm and b) after some (very short) length of cranking.
Of course, "hard starting" alone can be caused by so many things that it isn't diagnostic of anything, so I'm pretty sure you've got more.
Describe it to us. Especially what you are doing when you think it "should" activate, and what it is that tells you it isn't.
The CSI is only on during cranking. The CSI Timer will cut off the CSI a) if the engine is warm and b) after some (very short) length of cranking.
Of course, "hard starting" alone can be caused by so many things that it isn't diagnostic of anything, so I'm pretty sure you've got more.
Just wanted to point that out.
I pulled the cold start off and cranked motor.....nothing. No spray, no mist, not even a trickle.
Detached the fuel line going to it and it was dry. Creepy cause I know other end is connected to fuel rail.
Runner will start after over-cranking and once on it runs decent. Just the starting is bothering me.
09-01-2015, 10:27 AM
#4
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
The fuel line to the CSI connects directly to the fuel rail. If the 4runner will run, you have pressure in the rail. If there is no flow at all (with the line disconnected from the CSI), it sure sounds like something is plugged!
(You might be tempted to "blow into" the CSI end of the line, to blow out whatever is stuck in the line. I wouldn't do that; whatever is blocking the line will just end up in the injectors, and that can't be good.)
You could try one more step; disconnect the fuel line from the CSI, put it into a container (with a rag over it; at full flow it will splash), and tap the fuel pump with the FP connector. If fuel flows then, you may just have a CSI not opening, and the line is "dry" because the slug of air in there just never moved. If you get that far, I would then test the CSI http://personal.utulsa.edu/~nathan-b...88coldstar.pdf and the CSI timer http://personal.utulsa.edu/~nathan-b...ne/97colds.pdf
(You might be tempted to "blow into" the CSI end of the line, to blow out whatever is stuck in the line. I wouldn't do that; whatever is blocking the line will just end up in the injectors, and that can't be good.)
You could try one more step; disconnect the fuel line from the CSI, put it into a container (with a rag over it; at full flow it will splash), and tap the fuel pump with the FP connector. If fuel flows then, you may just have a CSI not opening, and the line is "dry" because the slug of air in there just never moved. If you get that far, I would then test the CSI http://personal.utulsa.edu/~nathan-b...88coldstar.pdf and the CSI timer http://personal.utulsa.edu/~nathan-b...ne/97colds.pdf
09-01-2015, 08:25 PM
#5
Registered User
Thread Starter
Join Date: Mar 2014
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
The fuel line to the CSI connects directly to the fuel rail. If the 4runner will run, you have pressure in the rail. If there is no flow at all (with the line disconnected from the CSI), it sure sounds like something is plugged!
(You might be tempted to "blow into" the CSI end of the line, to blow out whatever is stuck in the line. I wouldn't do that; whatever is blocking the line will just end up in the injectors, and that can't be good.)
You could try one more step; disconnect the fuel line from the CSI, put it into a container (with a rag over it; at full flow it will splash), and tap the fuel pump with the FP connector. If fuel flows then, you may just have a CSI not opening, and the line is "dry" because the slug of air in there just never moved. If you get that far, I would then test the CSI http://personal.utulsa.edu/~nathan-b...88coldstar.pdf and the CSI timer http://personal.utulsa.edu/~nathan-b...ne/97colds.pdf
(You might be tempted to "blow into" the CSI end of the line, to blow out whatever is stuck in the line. I wouldn't do that; whatever is blocking the line will just end up in the injectors, and that can't be good.)
You could try one more step; disconnect the fuel line from the CSI, put it into a container (with a rag over it; at full flow it will splash), and tap the fuel pump with the FP connector. If fuel flows then, you may just have a CSI not opening, and the line is "dry" because the slug of air in there just never moved. If you get that far, I would then test the CSI http://personal.utulsa.edu/~nathan-b...88coldstar.pdf and the CSI timer http://personal.utulsa.edu/~nathan-b...ne/97colds.pdf
I'll try that tomorrow and post results!
09-02-2015, 03:49 AM
#7
Registered User
if it is running and there is no fuel at the csi, you certainly have an obstruction in there. as stated, don't blow it to the injector rails, just pull it first and clean the line out.
Trending Topics
09-02-2015, 06:28 AM
#9
Registered User
Thread Starter
Join Date: Mar 2014
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
After further inspecting the situation....
I found the line is pinched betwn plenum and valve cover.
Crap!
I'm afraid that if I attempt to free it, it'll be broken or it'll break in the process. I'll have to start looking for one before I get myself into another jam.
09-02-2015, 07:50 AM
#10
Registered User
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes
on
649 Posts
23901-65010
http://www.toyotapartsoverstock.com/...rimLevel=18292 About $80
Don't forget that you need to replace all four of the crush washers when you replace that line. I've never found them but at a dealer, but they are cheaper than dirt. Cheaper yet if you're ordering the line; you can include the crush washers with no add'l shipping.
http://www.toyotapartsoverstock.com/...rimLevel=18292 About $80
Don't forget that you need to replace all four of the crush washers when you replace that line. I've never found them but at a dealer, but they are cheaper than dirt. Cheaper yet if you're ordering the line; you can include the crush washers with no add'l shipping.
09-03-2015, 05:49 AM
#12
Super Moderator
Staff
iTrader: (1)
Join Date: Aug 2008
Location: Anderson Missouri
Posts: 11,788
Likes: 0
Received 21 Likes
on
19 Posts
A pinched line is going to be a problem. On a 22re, I have never had a CSI to fail but the Timing Switch that contols the Injector is the one that fails and causes issues.
Thread
Thread Starter
Forum
Replies
Last Post
jennygirl
86-95 Trucks & 4Runners
11
11-17-2015 11:24 AM
jmc88runner
86-95 Trucks & 4Runners
3
06-18-2015 03:39 PM
