Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
#201
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
http://ecatalog.smpcorp.com/STD/#/ve...58941-2?type=s
http://ecatalog.smpcorp.com/STD/#/ve...58941-2?type=s
Confirmed thats the right injector 3858941-2VOLVO PENTA MARINE
http://www.iboats.com/Tbi-Injector-1...view_id.712848
Replaces OEM part #•MERCURY MARINE 852956A1
•VOLVO PENTA 3858941
Fits:MerCruiser MCM GM V6 & V8(305 &350) TBI engines
Fits: Volvo 4.3GXi-A, 4.3GLPWTC, 4.3GLPWTR, 4.3GSPWTC, 4.3GSPWTR, 4.3GIPWTC, 4.3GIPWTR, 4.3GIJWTR, 4.3GSJWTR, 4.3GLPEFS AND 4.3GiPEFS
http://ecatalog.smpcorp.com/STD/#/ve...58941-2?type=s
Confirmed thats the right injector 3858941-2VOLVO PENTA MARINE
http://www.iboats.com/Tbi-Injector-1...view_id.712848
Replaces OEM part #•MERCURY MARINE 852956A1
•VOLVO PENTA 3858941
Fits:MerCruiser MCM GM V6 & V8(305 &350) TBI engines
Fits: Volvo 4.3GXi-A, 4.3GLPWTC, 4.3GLPWTR, 4.3GSPWTC, 4.3GSPWTR, 4.3GIPWTC, 4.3GIPWTR, 4.3GIJWTR, 4.3GSJWTR, 4.3GLPEFS AND 4.3GiPEFS
TG - But is 3858941 the right Volvo application? BUP posted earlier that my OEM injector Volvo # is 3857398, and SB mentioned that the Black/Yellow equivalent is 25170301.
Not doubting that those are the right ones, just confused with all the part numbers being thrown around haha!
#202
Banned
![Default](/forums/images/icons/icon1.gif)
that is the purple / pink marked injector for apps of the 4.3 L Gi . Volvo lists this for the 4.3 Gi
EF and WT models only. they do not list for any V-8's. that was an easy one to remember.
If I can find my list I can post the injectors Volvo used from mid 90's to 2001 or thru 02 TBI apps.
Have to get back to work.
EF and WT models only. they do not list for any V-8's. that was an easy one to remember.
If I can find my list I can post the injectors Volvo used from mid 90's to 2001 or thru 02 TBI apps.
Have to get back to work.
#203
Registered
Join Date: May 2015
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
TG - But is 3858941 the right Volvo application? BUP posted earlier that my OEM injector Volvo # is 3857398, and SB mentioned that the Black/Yellow equivalent is 25170301.
Not doubting that those are the right ones, just confused with all the part numbers being thrown around haha!
Not doubting that those are the right ones, just confused with all the part numbers being thrown around haha!
http://www.dynamicefi.com/TBI_Fueling.php
Last edited by Tail_Gunner; 05-18-2015 at 10:24 PM.
#204
Registered
![Default](/forums/images/icons/icon1.gif)
THe paint marks wore off pretty easy and over time. I believe they used this for easy reference in 'bins' when the vehicles where assembled.
#205
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I will try them anyway. The ones SB sent will be here tomorrow I think, so I will see if they work. If not I can try your set, and maybe the Walker set. I decided that if the new injectors don't solve it, I think I am going to invest in the Diacom.
#206
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I am quite sure you will find this is the right injector but carry on..Bup does volvo use color codes on there injector's....Its priority tech is it not??? The key is being able to run at 30lbs of pressure and a 454 injector....ive tried to find the penta number with no luck.
http://www.dynamicefi.com/TBI_Fueling.php
http://www.dynamicefi.com/TBI_Fueling.php
SB - Are the ones you sent me the equivalent of a black/yellow injector? I know you mentioned one of the applications was for a 454.
I read on a TBI performance website that some truck injectors that run at 13 psi will actually flow less under high psi conditions. I wonder if this is true.
#207
Registered
Join Date: May 2015
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
What a tangled mess ive crossed the numbers to the tj11 to a 90lb injector and the tj17 to a 45lb injector...Merc and volvo used the tj17 on all the blocks using mefi and tbi at 30 lbs psi....The original part number for the volvo... well std motor parts tried to duplicate that but was unsuccessful in the yr 2000. It seems running 30lbs psi with tbi injectors is a black art GM gave up on it in 95 the problem was repeatabilty by the way your fuel pressure regulator is also suspect running those at 30lbs is bit of a job so to speak. I to have been having a small surge issue when going to wot and have come to the conclusion that the tbi is on its way out and new carb is in my future. Intresting back to the future so to speak
#208
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
What a tangled mess ive crossed the numbers to the tj11 to a 90lb injector and the tj17 to a 45lb injector...Merc and volvo used the tj17 on all the blocks using mefi and tbi at 30 lbs psi....The original part number for the volvo... well std motor parts tried to duplicate that but was unsuccessful in the yr 2000. It seems running 30lbs psi with tbi injectors is a black art GM gave up on it in 95 the problem was repeatabilty by the way your fuel pressure regulator is also suspect running those at 30lbs is bit of a job so to speak. I to have been having a small surge issue when going to wot and have come to the conclusion that the tbi is on its way out and new carb is in my future. Intresting back to the future so to speak
So the TJ 17's wont work then as a back up plan? I guess that means I only have the two walker ones to try (maybe)...
Were you mentioning I might have a fuel pressure issue? Im 99% sure I don't, because I haven't taken my gauge off yet, and it has been 33 PSI when running.
I just cant fathom what would go wrong on a TBI. They are so incredibly simple. Do you think converting to a carb will kill resale? I would love to convert to MPI. I already have the MEFI IV computer for it. Just need a manifold, distributor, injectors, and maybe a new wiring harness?
#209
Registered
Join Date: May 2015
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Well you have to remeber a few things the tb is automotive and the injectors were designed and to be used @ 13psi....Volvo changed that or GM delphi who know's ...to run at 30 lbs which required different spring rate's for the pressure regulator and those rebuild kit's are no longer availible either and the same with the injectors's who really knows the original spec...Now you need to get that spray pattern or fuel delivery issue cleaned up and there's little reference points to work with. Its either injectors that cannot handle 30psi (they stick open) or your fuel pressure regulator (internal you cant measure it) Now if you can find a injector that can handle 30psi and is the right flow rate then your home..The 11's should work by cross reference as the 17's by cross reference but the 17's are clearly smaller than the 11's. So you have to play around with them i guess.... or find a authorized dealer who still has the originals in stock or you might just call obd and see if they know the original injector size or can recomend a new injector and and reflash your mefi 4 back to new again. Let's see how the new injectors work
#210
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
No luck. Wont start at all now. Before it would start but with a ton of effort.. At least two mins of cranking. I just don't get it.
Are these injecotors smaller?
Also - I think I remember the factory ones sticking out of the pods further. But maybe I'm wrong.
Are these injecotors smaller?
Also - I think I remember the factory ones sticking out of the pods further. But maybe I'm wrong.