'98 EV fuel issue

[pehayes]

Hmm , any chance the timing is retarded ?
  Dusty

Timing is set by flywheel and camshaft sensors.  Can't move them.  Timing is fixed and non- adjustable.

Patrick Hayes
Fremont CA

[oldbike54]

Timing is set by flywheel and camshaft sensors.  Can't move them.  Timing is fixed and non- adjustable.

Patrick Hayes
Fremont CA

 Well yeah , I know all of that , but this thing is acting like the timing has gone woogity .

  Dust

[LowRyter]

If it's running on one cylinder you can hear it miss, you can touch both heads and the cool one is dead.  One cylinder still has enough power to run a good 60 mph. 

You might keep a spare plug with you.  Once it runs rough, pull the lead and stick the plug in it and observe whether it fires or not.  This is quicker than unscrewing a hot plug.

It sounds like you're getting weak ignition when you under load.  You might check the ground.

[jetmechmarty]

Thanks!  Unfortunately, I have to put this on the back burner for a few days.  Perhaps I should let Tom have his thread back on fuel delivery and I'll start a new one when I get back to it.

[maquette]

Thanks!  Unfortunately, I have to put this on the back burner for a few days.  Perhaps I should let Tom have his thread back on fuel delivery and I'll start a new one when I get back to it.

Marty,

Please stay here, I'm following your issues with interest. I haven't started on mine and won't until at least Monday. If that doesn't cure my problem I'll know what else to look at.

Tom

[jetmechmarty]

Hopefully, I can find a few minutes after work on Monday.  It shouldn't be too hard to figure out if it's fuel or spark that's missing.  Without checking, I'm assuming that I have compression.  I'd like to be dealing with it now.

[jetmechmarty]

SEAFOAM

This stuff is legendary, isn't it?  I have found it a decent solvent and it has helped me with some carburetor issues.  I once ran a 1 hp Briggs & Stratton engine on 50% SeaFoam and 50% gasoline.  (It wouldn't run on 100% SeaFoam)  It kept me from having to break out my tools and fix the carburetor.

Anyway, it's in the mix with my fuel in the Guzzi now.  I don't believe it can hurt anything.  I'm sure it can dissolve varnish from old fuel deposits.  I'm not confident that it's going to fix my bike.  Anyway, to answer the very first post, you can use it often mixed with gasoline without hurting anything, IMHO.  I've been using it for many years.  I just never have expected it to perform miracles.  I expect it's OK at cleaning injectors if they aren't completely plugged up.

[maquette]

SEAFOAM

  Anyway, to answer the very first post, you can use it often mixed with gasoline without hurting anything, IMHO.  I've been using it for many years.  I just never have expected it to perform miracles.  I expect it's OK at cleaning injectors if they aren't completely plugged up.

Marty,

I went to Sea Foam's website and if I read it correctly, they are basically saying you can't add too much, (short of 100%). They recommend like an ounce per gallon with 3-5K miles as a "normal" range for treatment. I am going to replace my petcock with a manual one, clean out the tank, make sure the vent/drain is clear and change the main fuel filter. Hopefully I can get on it tomorrow sometime. Once I get the main filter out, I plan to cut it open and see what it looks like inside. My bike has 39K on the clock and I have no idea of it's maintenance history.

Tom

[jetmechmarty]

Tom,

I just put a Wix 33008 fuel filter in mine.  I made a few laps around it with a roll of metal duct tape to take up the space in the clamp.  I removed the rust from the tank with Metal Rescue sourced from Home Depot.  So, whatever is wrong with my bike isn't the tank or filter.  I removed the tank and the petcock was closed.  It did not leak.  It obviously opens because it continues to run, even if it's on one cylinder.

I have never ridden this bike.  I've been looking at it sitting in my basement for too many years.  It's time to put this one on the road.

[Vagrant]

if you only drink one glass of red wine in less than 1 hour on the 98 you can check the valves, replace the plugs and check the plug wires to make sure they are in the coils. then clean both the timing sensor on the cam and the flywheel sensor for debris. replace all of the relays and if there is still an issue the real Guzzi mechanics will know where to go next.

[jetmechmarty]

if you only drink one glass of red wine in less than 1 hour on the 98 you can check the valves, ....

I just have to be at home to do it.  I'm 125 miles away.

[guzzisteve]

Sounds like a Guzzi Garage party to me, I limit it to 2 shots, Ready for some help Marty?

[jetmechmarty]

Sounds like a Guzzi Garage party to me, I limit it to 2 shots, Ready for some help Marty?

I'm in!

[John A]

Do what Vagrant says and clean the pickups, they are magnetic and crud collects on them, especially the one for the flywheel . Let's hear it try to go up the hill, maybe it's in second gear, no offense intended

[maquette]

Tom,
I just put a Wix 33008 fuel filter in mine. 
I have never ridden this bike.  I've been looking at it sitting in my basement for too many years.  It's time to put this one on the road.

Marty,

Did you remove the petcock, and if so, what did it look like? I bought the same fuel filter from NAPA. Oh, and how did your main fuel filter look?

Tom

[guzzisteve]

Day 2 of retirement Marty, I'm going to get bored. I'll bet it's something simple.

[jetmechmarty]

Marty,

Did you remove the petcock, and if so, what did it look like? I bought the same fuel filter from NAPA. Oh, and how did your main fuel filter look?

Tom

The petcock was in a box when I got the bike, as was the fuel level transmitter.  It was clean and I cleaned and derusted the tank before installation.

[LowRyter]

speaking of the issue, my '98 is dripping gas under the left side injector soaking the TPS.

I shut off the pet cock.  I'll yank the tank and check the fuel connection hose on the left side.  <shrug>

[Kiwi_Roy]

Another thing that happened to my 98, it started missing on one cylinder under power, it would idle fine.
I found the plug leads were the carbon resistor type and it also had 5k resistor caps, one of the leads was arcing inside where the core was missing.
As soon as I could find some copper core cable I binned the carbon type.
If you pull both the plug caps they should measure the same resistance from cap to chassis, about 8k Ohm from memory.

The low gear on these bikes is quite tall, could it be you are just approaching the driveway too slow, how does it run at speed on the flat?
The 98 EV is one of the best Guzzis made IMHO

BTW, what ECU does your bike have, the large P8 or the small 15M?

[jetmechmarty]

The low gear on these bikes is quite tall, could it be you are just approaching the driveway too slow, how does it run at speed on the flat?
The 98 EV is one of the best Guzzis made IMHO

BTW, what ECU does your bike have, the large P8 or the small 15M?

I can't imagine a larger one.

I don't have enough room to run out on the flat, as I am at the bottom when I come out of the garage.  I never rode the bike, so it's completely unfamiliar.  Since the experts watched the tape and say I'm running on one cylinder, I'll start there.

BTW, below is some of what was in the bottom of the tank.  It's a surprise that I haven't found any holes.


I used this to get rid of the rust.

[Vagrant]

Day 2 of retirement Marty, I'm going to get bored. I'll bet it's something simple.

I can't believe you finally retired.
with no Riders hill anymore you should have lots of cash work if you want it.
me I'd rather ride.

[Vagrant]

speaking of the issue, my '98 is dripping gas under the left side injector soaking the TPS.

I shut off the pet cock.  I'll yank the tank and check the fuel connection hose on the left side.  <shrug>

wait on this. brand new ones did it on the dealers floor. they usually quit when put into service. this IMHO was also the reason for the TPS failures. the dried fuel left deposits on the TPS that screwed up readings. occasionally a cleaning with electrical contact cleaner would give them new life.

[LowRyter]

wait on this. brand new ones did it on the dealers floor. they usually quit when put into service. this IMHO was also the reason for the TPS failures. the dried fuel left deposits on the TPS that screwed up readings. occasionally a cleaning with electrical contact cleaner would give them new life.

so, there might have been a slow drip that just go worse? 

[guzzisteve]

I can't believe you finally retired.
with no Riders hill anymore you should have lots of cash work if you want it.
me I'd rather ride.

I'll still be at the shop in Marietta, part time

[maquette]

Well I began my introduction to fuel tank removal and have some questions. With the key in the off position, I still get fuel out of the electric fuel petcock. The wires to it were not tie wrapped and when I went to (gently) unplug them, one broke. I have a manual petcock to install, so I'm not too concerned about that. I siphoned as much gas out of the tank as I can get.

I removed the screw and tool tray and in the front, (under), of my tank is a line attached that I guess is the pressure adjuster? It's held on by a 19mm nut and I can't seem to find a way to get a wrench on it. There is also another line that I guess is the vent. It has a clamp of some sort, but will have to be removed before the tank will ever come off.

Questions:

1) Is there a tip to get at the 19mm nut to remove it (It is right hand thread, yes?)

2) How do I remove the clamp on the vent hose without destroying it, it looks like one that is crimped on?

Thanks,

Tom

[Zoom Zoom]

Since it sounds as if the lines are still original, (and really ought to be replaced at this age), I would cut the line and worry about getting that clamp off on the bench if it were me. Just remember that the pressure regulator has a nipple that does not have a hose on it. It simply vents to atmosphere. The regulator should remain attached to the tank.

If fuel is coming out the petcock, than it is stuck open. Normally it would only open when energized. If a wire broke off it's toast anyway.

John Henry

[pehayes]

The pressure hose nut usually requires a special wrench.  Find an old, sacrificial one and grind away like this:



You will get better access to the nut if you lift the aft end of the tank and slide it backwards an inch or two.

Leave the breather hose attached at the tank.  There is a one-way plastic valve downstream under the chrome panel on the left side of the steering head.  The hoses usually just pull apart at that fitting.

On the early EV, the regulator stays on the frame by the right cylinder.  On the later EV, the regulator is moved up to the front of the tank.

Patrick Hayes
Fremont CA

[Chuck in Indiana]

speaking of the issue, my '98 is dripping gas under the left side injector soaking the TPS.

I shut off the pet cock.  I'll yank the tank and check the fuel connection hose on the left side.  <shrug>

Just a heads up. Those tanks have been known to leak at a place where they are stretch formed during manufacture. It's toward the front about 2/3 of the way to the top. You'll see some wrinkles in the steel. It'll leak under the paint, and look like a fuel tap leak.. the low point. Don't ask me how I know..

[maquette]

Here's what I've found so far:



https://elrick.smugmug.com/EV-fuel-issues/i-8Jc9wTN/0/XL/001-XL.jpg

Now I need to get to the main fuel filter and then buy some new lines and fittings, clean out the tank and roto-root the vent.

Thanks!

Tom

[jetmechmarty]

Tom,

If the tank is just rusted at the bottom from what I'll call ethanol poisoning, clean it up with Metal Rescue and drive on!  I had no difficulty removing the hose with a cheap 19 mm combination wrench.

As for mine, I'm feeling like a dumb-ass.   I got caught overthinking this thing.  Spark plugs were my final issue.  I changed them and it fired right up on two cylinders.  It pulled me right up the driveway without issue.

Why would someone have put BPR7ES plugs in it?  The book says BPR6ES.