As in a molded connector or just a hood over it?

You could access wires at the ECU but would need a wiring diagram, but you would need a wiring diagram anyway.

True, I forgot about that.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

Just ordered lift pump rebuild kit and a NEW overflow valve, we'll what comes of it.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

Be aware that the 60x engines use a drilled-orifice style overflow valve. The orifice size determines pressure in the fuel rack, not spring pressure. The check valve with extremely weak spring is only there to prevent air ingress after shutdown. Changing the overflow valve will do nothing for pressure in the fuel rack.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

Interesting, I thought that a worn out overflow spring/deformed plastic bushings would cause issues.

Greazer's overflow valve springs are indeed a direct upgrade correct?

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

No. The older MW IP's on the 616/617 and earlier engines had the pressure in the fuel rack regulated by the spring on the overflow valve. The spring operated a ball bearing that stopped flow through the OFV when pressure was too low.

The 60x engines use a different setup and a different lift pump. The lift pump can supply significantly more fuel than the IP can consume. Pressure in the fuel rack is regulated by the drilled orifice in the OFV, the lift pump moves a given volume against that orifice and pressure is a result. When pressure gets too high, the piston in the lift pump "floats" and pumps no more fuel. The plastic piece that warps and deforms is only there to serve as a check valve. The purpose is primarily to prevent air ingress when the engine is stopped, not to regulate fuel pressure. The spring is extremely weak, you can blow throw the valve with no effort. A warped or failed plastic check valve piece may cause some rough starts, but it won't affect power delivery or fuel pressure in the rack.

Greazzer's modded OFV will work on the 601/2/3 IP's without modification (I ran one on my SDL). Not sure about the 604/5/6. Be aware that priming the air out of the system is a major undertaking with the 61x style OFV fitted. The 60x fuel system has no primer handle and is designed for the air to be simply pushed out through the drilled orifice OFV.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

What would be the advantage of going to a non drilled valve other than a crutch for a weak lift pump / reliving the good old 240D days when the car runs out of fuel?

In my case it was a band-aid for air ingress issues, even with a brand new OE drilled OFV. I never found the air ingress source, but the spring style valve kept the rack full of fuel when sat. I freely admit it was a band-aid fix, but it worked to solve the problem I was having. I have the brand new OE drilled OFV mentioned above installed on my 350SD with 0 issues.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

Got it. My fix is an inline " looks like a fuel filter " universal fuel pump wired to turn on as soon as the glow plugs are in operation, it also runs with the key in the run position. I've got a 3 cyl Kubota on a ride on sweeper that had intermittent long crank, now it is a glow and instant start.

I put these pumps get put on other small to medium industrial diesels as primary lift pumps. If I had an old decrepit on the road diesel I'd do the same.

Thanks for clearing that up, I removed the overflow valve from the order.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

That is a feature, not a bug !

Just did a 3 can diesel purge and filter change on a hot engine, underload at full RACK, nothing, no change whatsoever. The diesel purge didn't even get dirty, not even in the slightest. Clean fuel system.

Engine didn't get any quieter on the purge, which tells me my engine is in very good shape. Engine never smoked or shook to begin with.

Now, I have no choice but to rebuild the lift pump. That's going to take me all day.

If lift pump rebuild doesn't do it, it's time to buy a Xentry a get to the bottom of it.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

What's with you? I don't even go over 3900rpms anymore when driving, that's pretty much my redline.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

You need a scan tool that can read what's going on in the ECU and TCU. From what you described I think you have a transmission problem or the throttle position sensor is bad.

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CENSORED due to not family friendly words

When I said "That's pretty much my redline " i'm saying I don't take it over that rev range because it quickly looses power.

It can go over that, but it pointless. It will be a while before I get Xentry.

__________________
1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.