Changes for 2005 NEW FLUSH FITTING FOR ALL ENGINES

This is the new flush fitting. It has a positive O-ring seal in addition to the conventional hose seal. The O-ring should periodically be lubricated with a drop or two of engine oil.

The older blue flush fitting can be upfittedwith this new style, o-ring sealed, flush fitting; however both halves of the new fitting have to be used together.The half that connects to the engine hose has a relief cut in it for the o-ring. If just the cap is changed, the o-ring will be cut by the old lower fitting.

CAUTION: Care should be used with the old blue fitting. If it isn’t tight, it can cause an air leak to the inlet side of the raw water pump causing an overheatsituation and damage to the pump impeller.

Starting with engine serial number 4012133180, all closed cooling system engines shipped from Lexington with have Ethylene Glycol antifreeze installed. This information is covered in Service Bulletin 26-1-10 dated 7/04

Volvo Penta of the Americas Volvo Penta of Americas

1300 Volvo Penta Drive 1300 Volvo Penta Volvo Chesapeake, Virginia 23320-9810 Virginia USA USA USA USA

Group Number Version 26-11001

Coolant Change

Models

3869253, 3869256, 3869259, 3869261, 3869269, 3869271, 3869273, 3869275, 3869284, 3869286, 3869288

Distribution:M Date:7-2004Binder:CPage:1(1)

Coolant Change for Fresh Water Cooled Gasoline Engines

Volvo Penta Fresh Water Cooled engines built after July 12, 2004 and commencing with serial number 4012133180 will be shipped from the factory with Ethylene Glycol coolant. This is the same specification coolant that is recommended in the owner’s manual and is offered for service through Volvo Parts. Volvo Penta coolant is available as listed below: part no. 381081

Six pack of one gallon containers

Important Note: part no. 3810287

·Ethylene Glycol must be used to “top-off” or refill engines shipped with Ethylene Glycol starting with the above serial number.

·Ethylene glycol can be used to “top-off” or refill engines shipped with Propylene Glycol with serial numbers lower than the above serial number.

Fifty five gallon metal drum

·Propylene Glycol must never be used to “topoff” or refill engines that contain Ethylene Glycol.

MEFI IV GM/Delphi Based Engine Models

EFI Model Similarities (Big Block vs. Small Block)

•Crankshaft position sensor and reluctor ring (CKP)

•Camshaft position sensor (CMP)

•Multiport injection

•Single fuel pump assembly for all models (except 05 8.1L)

•No ignition timing adjustment

•Cylinder balance “drop test”capability with scan tool (capability is in MEFI 4 ECM)

•Temperature controlled rev limiter

All the MEFI IV controlled engines have these items in common. The cylinder drop test is available using the diagnostic tools.

8.1L MPFI

Differences from IAFM

•40PSI (+/-4 PSI) fuel rail pressure (note: error in ‘early’manuals)

•8 individual ignition coils and leads

•No distributor to set

•Different component locations

There are important differences between the engines that still must be noted other than those shown in the picture above.

The early 8.1L Workshop manual (7797351) incorrectly stated that fuel pressure should be 50-62 PSI.

IAFM stands for Integrated Air Fuel Module. IAFM is a special package consisting of an intake manifold, throttle body and injectors that is installed on Volvo Penta’s MPI V6 and small block V8 engines.

I A F M Model Differences

4.3, 5.0 and 5.7 GM Based IAFM Multi Port Engines

•50-60 PSI fuel rail pressure

•TBI fuel pump module not compatible

•Single ignition coil

•Spark distributed through a distributor housing

•Critical distributor housing positioning, but no timing specification

•Different component locations

Do not move the distributor housing on the V6 and small block V8engines unless the service manual states to do so. There is no timing adjustment for these engines. All timing advance is controlled by the ECM. Turning the distributor in theblock only changes the air gap between the rotor and the distributor cap.

The higher fuel pressure rating for the multiport V6, 5 liter and 5.7 liter engines requires a new fuel cell (MOAS) compared to earlier throttle body models.