Question about Ultima Shovelhead 96ci Engine for Harley-Davidson. Black Finish with Chrome Accents

Open Question

Ultima Shovelhead 96ci Engine pining

Intake and exaust is sealed timing advance or retarded points or electronic ign fatter jets stil pings

Posted by Anonymous on

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

CVO110. Is timing adjustment automatic?


These guys can give you guidance:
www.officialharleyparts.com

Sep 09, 2015 | Harley Davidson Motorcycles

2 Answers

I have an 04 electro/glide classic, i've cleaned the carb, and replaced the intake gaskets. and it's still backfiring loudly. what else can be causing this? Ike


04 is electronic and carburation isinjected,all preset(OEM),aparently your toy needs timing reset.Otherwise,it's running too lean and will blue your pipes up.If was carburated,just need to fatten up on mixture screw.Injected,go 2 main jet sizes over the present jet size and reassemble.Not getting enough fuel,now that you've sealed it from air leakes,is why they sputter and cough.Larger jet will cure that.2 sizes over OEM jet will stop that.If still problem,go to next sixe up.

Oct 02, 2013 | Harley Davidson Motorcycles

1 Answer

I have a 2000 chevrolet astro 4.3 awd van , that keeps announcing the code po325 which i already replaced but the problem is still there...


so you change the knock sensor right. if so, is there any noise coming from engine . the knock sensor tell pcm to retard timing so there is no ping ping in engine advance timing.pcm apply 12 volts to knock sensor when it hear a noise vibrating sensor the voltage will drop down and tell pcm the info.

Aug 24, 2013 | 2000 Chevrolet Astro

1 Answer

What is a knock sensor & how do I find it?


It allows the engine to run with the ignition timing as far advanced as possible. The computer will continue to advance the timing until the knock sensor detects pinging. At that point the computer retards the ignition timing just enough for the pinging to stop.
A knock sensor assures that you're getting as much power and fuel economy as is possible from your engine.
The knock sensors on your vehicle is located under the intake manifold.

Mar 19, 2013 | 2004 Chevrolet Suburban

1 Answer

Hello - I have a 2004 kawasaki 1500 vulcan nomad fi. I was first wondering how to stop the pining I get when ever I try to use more then 3/4 throttle and second I just installed a cobra exaust system


Pinging, or pinking as it tends to be called over here, is caused by detonation where for various reasons the fuel charge in the cylinder, instead of starting to burn at the spark plug with the flame front spreading smoothly across the combustion chamber, begins to burn in more than one place and the pressure rises too quickly mostly causing the audible pinging. It doesn't do the engine any good at all and has been known to melt spark plugs and pistons and it isn't always audible...

Low grade fuel is one typical cause. Using a fuel with a lower octane rating than recommended is one reason for pinging.
Sometimes an engine will retain carbon in the combustion chambers instead of getting rid of it. I don't know what causes one engine to rid itself of surplus carbon and others to retain it but carbon build up makes the combustion chambers smaller and increases the compression ratio and pressure, theoretically requiring higher octane fuel.

Carbon in the combustion chamber could be causing a "hot spot" that in turn is causing the second flame front or even igniting the fuel before the spark plug fires.
The wrong grade of spark plug can be a contributory factor and it is possible your engine should have a colder grade of spark plug.

Ignition timing that is too advanced causes the pressure to be too high.

Your new exhaust system could have less back pressure than the original and this would tend to change the engine characteristics, particularly the fuelling that could now be a little on the weak or lean side which burns hotter and could be contributing to the pinging and also exhaust popping on deceleration (as does ill-fitting exhaust joints).

Fiddling around with the throttle position sensor would be unlikely to provide a complete and permanent cure, I feel. I once had brought to me an engine that pinged almost constantly when our fuel became unleaded. At first retarding the ignition timing worked but over a few months it had to be retarded more and more until the performance was terrible. After removing the cylinder head everything looked normal though the piston tops and combustion chambers looked strangely black but nothing could be scraped away to leave shiny metal.
Shiny metal was achieved after using a small chisel and a light hammer to remove a substantial layer of the hardest carbon I have ever encountered. The engine then ran normally with standard ignition timing.

Mar 05, 2017 | kawasaki Motorcycles

1 Answer

I want to convert to a points igniton system from a electronic ignition system


Well, I won't ask why but you can purchase an aftermarket kit to do this with. You'll have to take the sensor plate and "timing cup" out of the timer cavity on the right side of your engine. Replace the timer cup with a mechanical advance unit. Then, you put the points breaker plate in and set the points to 0.020". Set the timing by bringing the front piston to top dead center and align the timing mark in the timing hole on the left side of the engine. Adjust the breaker plate so that the points just barely break at this point. This is close enough to get the engine started but you still need to set the advanced timing using a strobe light. You'll have to change the ignition coil as well. The coil on your bike is intended for use with an electronic ignition. The coil for a points system must have a primary coil resistance of 5-6 ohms. Simple purchase one for an early model bike like a 74 model Shovelhead. A word of advice. If you're going to do this, purchase the needle bearing mechanical advance unit. The others only last a couple of years before they're worn out.

Good Luck
Steve.

Apr 03, 2011 | 1993 Harley Davidson FLSTF Fat boy

1 Answer

Knock sensor


It allows the engine to run with the ignition timing as far advanced as possible. The computer will continue to advance the timing until the knock sensor detects pinging. At that point the computer retards the ignition timing just enough for the pinging to stop.
A knock sensor assures that you're getting as much power and fuel economy as is possible from your engine.


knock sensor
The knock sensor responds to spark knock caused by Pre-detonation of the Air/Fuel mixture. As the flame front moves out from the spark plug ignition point, pressure waves in the chamber crash into the piston or cylinder walls resulting in a sound known as a knock or ping. This is caused by using a fuel with a low octane rating, overheating, or over advanced timing. Sometimes it can be caused by hot carbon deposits on the piston or cylinder head that raise compression. A knock sensor is comprised of Piezoelectric materials; Crystals that when impacted, generate a voltage (same idea as a BBQ ignitor). This voltage is monitored by the computer, and when an irregularity is detected, the computer corrects timing in VVT (variable valve timing) engines, or triggers a DTC Diagnostic Trouble Code) in older vehicles.

Apr 23, 2010 | 1998 Honda Accord

1 Answer

My 350 idles rough at an idle but runs smooth above idle and it pings under a load. The timing is right on.


fuel injected?-was the engine rebuild-higher compression ratio?
pining=detonation which occurs with to advanced timing or lean fuel
mixtures-could be as simple as wrong grade of fuel. carbon deposits in the combustion chamber can also cause pre-ignition.spark plug gapping or even to long of a plug? there is also the posibility of a vacuum leak or intake leak as this would lean out the fuel mixture-scan tool read fuel trim and o2 readings bad sensor or exhaust leaks could cause fuel mixture issues as well. hope any of this helps..

Apr 15, 2010 | 1990 Chevrolet K1500

1 Answer

Will it hurt my engine if i dont replace my knock sensor


definately,
It allows the engine to run with the ignition timing as far advanced as possible. The computer will continue to advance the timing until the knock sensor detects pinging. At that point the computer retards the ignition timing just enough for the pinging to stop.
A knock sensor assures that you're getting as much power and fuel economy as is possible from your engine.

Mar 07, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

Ing timming for a 1969 chev 427 390 hp


It's trial and error. If it's a stock points style ignition start with factory settings. If it's an aftermarket electronic ignition, you'll need to know how much vacuum, mechanical or electronic advance there is. Most street engines work best with around 32 to 36 degrees total advance. So you use a timing light to set basic timing at 10 to 14 degrees BTDC, and find out how much vaccum, mechanical or electronic advance there is by 4500 RPM ( it's usually best to have all the advance in by 3600 RPM for a street or strip car). Then reset idle speed and use a stopwatch to test 0 - 60 MPH times and go with what setting gives you the fastest time without pinging. Maybe even a couple more degrees retarded for street use on pump gas ( you can always bump it up a few degrees at the track or when using octane boosters).

Jul 21, 2009 | 1987 Chevrolet Nova

Not finding what you are looking for?
Ultima Shovelhead 96ci Engine for Harley-Davidson. Black Finish with Chrome Accents Logo

Related Topics:

68 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ultima Sport & Outdoor - Others Experts

yadayada
yadayada

Level 3 Expert

75807 Answers

kakima

Level 3 Expert

102366 Answers

Brad Brown

Level 3 Expert

15557 Answers

Are you an Ultima Sport and Outdoor - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...