1997 Volvo Penta setup GiPLKDCE. New long block about 70 hours ago and still thinking I got some injector issues after having them tested by a guy who I think just took my money and did nothing. Long story. Although I never like throwing parts I got enough symptoms to ensure I have a leaking injector and prob another one not firing so well. Since it's a new long block I'd love to have new injectors but couldn't source the right solution when we built the engine.

I"m here because there is another thread that talks about this delphi/rocherster number in regards to 500 EFI and I'm having the worst time cross referencing these plugs. Already bought one set from an online guy who swore he knew what I needed and they didn't even fit properly and he took them back. Now I sea a FleaBay seller out of Illinois with and add that seems to be respectable and written bett3er then then all the junk injector advertisements. I cannot post the link but just search the model number for a listing by a seller named FUEL-INJECTORS with 100% feedback. He's the only advertisement on there other then a refurb set out of Fla for $100 more.

Can someone offer any advice or experience on these and if they cross reference to anything in the auto world for a stock setup...not sure why this is so difficult with so many of these injectors used across so many platforms!

Thanks for any solid advice...even if I don't want to read any bad news!

I would never buy injectors from ebay, amazon other kind of sellers, 100% or not. Never found anyone which can actually rebuild any injector other then older diesel mechanical type. If they pass test after cleaning, all good, otherwise no

which gi motor?
What are your symptoms?

I'm kind of with you on the Ebay/Amazon comment but in two seasons of searching this is the only add I've found that gives me hope. It reads as new injectors and mentions they properly fit although look different with correct specs which nobody to this point has been able to confirm. Every time I get what I believe is good advice (online) I find the next good advice guy conflicting...so it's been a crazy project on these injectors!~

The specific model of the engine even took forever to figure out as there was no OEM plate but someone was able to reverse engineer the engine spec based on the outdrive collar codes I found. It's a: 3857700


When we put the new long block in something was right and we determined one injector was incorrect by moving it around and getting a no fire symptom on a cylinder...the issue followed the injector. Local marine shop had one laying around but wasn't sure why he had it and engine power improved.

• Boat can smell like gas coming off plane or at idle
• Often hard to start after longer runs (20+ minutes)
• Starts perfect from cold
• Sometimes stalls as idle
• Idle can be bumpy especially after a long run and we are idling for 10 minutes to marina
• Repeatedly have check all fuel lines and exterior of injectors for leaks. Can find no leak and NEVER smell fuel inside engine when cold or after long run. It seems to smell coming through intake is my guess. Assumed it was exhaust but never seen fuel in water from I/O exhaust.
• I've seen on a handful of occasions smoke come out of intake after coming when having issue with hard start after hot engine and longer run

Symptoms seems like leaking or faulty injector(s) somewhere based on all the guides I've seen.

FYI the Idle Air Control (IAC) valve was new in the spring too. 7.4 GiPLKDCE and the OEM number for injectors is 3857700

I'm going to include the sellers description just to amuse you guys as I cannot post a link yet. Again, it reads like someone who has done a bit more research then the average crap listing I've seen but I understand the reluctance based on the garbage out there. They want $400 for the set and claim new, bosch and USA made (do they make in USA?)

EDIT: They claim full guarantee so I guess I can send them back if they don't work but I"m sure many have the experience that poor quality ones can work...for awhile!

[/QUOTE]

Brand New Bosch EV-6 Upgrade Performance Set of Injectors Replaces Delphi Marine 17090304.

MADE IN THE USA!

This Set of Upgrade of injectors will perform better than the original Units. They will solve the quality issues inherent in the original design. Original unit common problem include:

• Internal corrosion due to inferior material used in the OE casting.
• Sticking in the open position causing the engine to over fuel.
• Electrical shortages causing total injector failure.

Since the connectors are the exact same as the OE units the flow matched set doesn't require any connector adapters. The 4 orifice nozzle produces a much better spray pattern than the OE injectors. The modern internal design helps prevent these injectors from sticking, which is a common problem with the OE units. They are E85 compatible!!

O-Ring dimensions and the distance from the upper O-Ring and Lower O-Ring are the exact same as the OE injectors. Resistance is 12.5 OMS and is the same as OE.

These injectors have been tested in the field and have produced extraordinary results in overall performance. In addition they solve all OE injector related issues.

Flow rates are as follows:

Our High Performance Replacement:
380cc per minute / 36 Lb/Hr. at 43.5 psi fuel pressure

440cc per minute / 42 Lb./Hr. at 58 psi fuel pressure

[QUOTE]

Seller has 100% feedback over 20 years and 4000-5000 sales I saw. They included a photo of the injector it's replacing which I never see in other listings!

Brand New Bosch EV-6 Upgrade Performance Set of Injectors Replaces Delphi Marine 17090304.

MADE IN THE USA!

This Set of Upgrade of injectors will perform better than the original Units. They will solve the quality issues inherent in the original design. Original unit common problem include:

• Internal corrosion due to inferior material used in the OE casting.
• Sticking in the open position causing the engine to over fuel.
• Electrical shortages causing total injector failure.

Since the connectors are the exact same as the OE units the flow matched set doesn't require any connector adapters. The 4 orifice nozzle produces a much better spray pattern than the OE injectors. The modern internal design helps prevent these injectors from sticking, which is a common problem with the OE units. They are E85 compatible!!

O-Ring dimensions and the distance from the upper O-Ring and Lower O-Ring are the exact same as the OE injectors. Resistance is 12.5 OMS and is the same as OE.

These injectors have been tested in the field and have produced extraordinary results in overall performance. In addition they solve all OE injector related issues.

Flow rates are as follows:

Our High Performance Replacement:
380cc per minute / 36 Lb/Hr. at 43.5 psi fuel pressure

440cc per minute / 42 Lb./Hr. at 58 psi fuel pressure

Those are: L-67 3800 supercharged Bosch 36Lb injectors , they are close but FAR from a perfect match , sometimes they are referred to as a 33.5 lb injector, here is a link that gives some info https://www.injectorplanet.com/produ...55737-24503406
A few years ago someone had purported to have found a "dead match" to the 500 efi injector, I nspent about 1000$ buying close injectors and flowing them against 500 injectors and there is NO dead match. so one day one of my injector customers calls me from maryland, sayd hes got a 500 EFI thats hurt and it has some funny looking injectors different from the other engine, the customer told him they were 500 replacements he had gotten. I offered to flow test them for free as I wanted to see wtf they were. They showed up, I immediately knew they were a Bosch or Bosch copy but someone had went as far as taken a dremel and ground the numbers off each one, my son who works at my business walked by, looked at them and and said "whos got the 3800 L-67". I ran them on my machine against some good used 500 injectors, they were CLOSE but did NOT match, then I ran them against some used L-67 injectors and they had exact same characteristics. There were areas where they flowed MORE, there were areas were they flowed LESS then the 500 efi injectors not talking 1 or 2 %, talking 8, 10, 12+. When Frank got the 500 back together for his customer, he retuned it on the water and found his afr targets were off and it took tuning top to bottom to get it right, I wouldn't buy them , Smitty
and as far as "flow matched", the TRUE way a injector is grouped and "flow matched", the seller buys a high quality injector machine (like my ASNU I use) and a large quantity of injectors then runs them acrossed the machine and discards the low and high ones to create a set that are within +/-1%, most injector sellers throw that word around pretty loosely and unless they are reputable AND charging a premium for their time and the discarded injectors, their blowing smoke, Smitty

First, thanks for everyone responding. For some reason I don't get response notifications from this forum so I'll have to start checking my spam folder.

I'm rather surprised that my run of the mill Volvo Rental Gi engine that prob dials in at 310HP runs the same injectors as the 500EFI but of course I know nothing of intricacies of how these work against the unique tunes vs HP. I figured you guys were needing flows well above 33-36lbs!

So the short answer is nobody sells new OEMs and nobody makes a perfect after market and the only way you guys get around it on your high performance boats is all the custom tuning?

Anyone want to comment on my symptoms pointing to faulty injectors? If so is the best bet just to pull them and find a good trustful injector expert to flow and test them and find out which ones are crap? or are 25 year old injectors all going to be crap?

Thanks for all your time and consideration. I know you all have better things todo but I guess we like to help on forums due our likes.

Update to my own post here...

I did look up the original ebay seller who claimed it's a Bosch EV6 just to see if it compares to the link ArticFriends posted. His mention of 3800 L-67 @ 33.5lbs does seem a bit different then the sellers claim. Since I cannot post a link just google Bosch EV6 and one of the first links is for FiveO Racing and you'll see the injector the seller claims are 36lbs (380cc). They look like the ebay sellers photos.

As much as I hate todo it I think I'm going to order them as he told me if they don't work he will accept returns and he has a 100% rating for 5000+ sales...but I"m sure they can be gamed too. $400 for the set.

I'll report back if my borderline stupidity doesn't work out. I need a solution even if it's almost throwing parts at it.

link to EV6 works now: https://www.fiveo-racing.com/product...nt=36732374339

Humm wonder who that was..........we know who

Would that be J.M. in Dallas? Just askin'.

Is this a throttle body or an injector over every port? I have a pair of Volvo engines. I sent injectors out as part maintenance. These are throttle body. I was told they do not service them and cheaper to buy new. He gave me part number for a GM truck. I put originals back in as it runs fine. It didn’t have time to mess with them.

Withe injectors, there is often variances in advertised description, plus when there flowed on a machine, isoheptane is used, not gasoline and flow yield changes slightly. A L-67 injector is referred to as a 36 lb in most descriptions, some say 33.5 at 3 bar, 36 lb at 4 bar but not most, there wasnt a 33.5 and 36 lb version, they are one and the same fwiw.