Timing
Put new timing chain. This 1983 has been called a one year only model. It has a computer processor under drivers seat. Rotor has two contacts(funky looking) cap has 2 firing orders on it. Cap shows clockwise order but google is counterclock! 302 & 351 orders are on cap.Some call my motor a 351 modified. Googled firing order but got different order! Its not turning over fast as if starter is dragging. What is touring order for oddball motor? Picture of distributor please.
My car has 160000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
The firing order for the vehicle you described is: 1-3-7-2-6-5-4-8; the rotation is counter-clockwise. Number 1 on the cap is the terminal closest to cylinder 5 (rear of the cap, on the drivers side). Remember also that it is very important to put the wire to cylinder one in the correct position to start the firing order.
If this is not correctly in place, it can also cause severe running issues as it alters the ignition timing also. The ignition timing being off can definitely have an affect on the starting. If you need assistance with the ignition timing after getting everything settled, I recommend having a certified technician, such as one from YourMechanic, help you adjust the timing if needed.
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Let the motor get up to operating temperature, and then use a timing light to set the timing between 34°-38°total timing, again you will need to find what works best for your motor.
Definition of `ignition timing`
Ignition timing is the timing of the spark relative to the piston top dead center in a spark ignition engine. You can adjust the ignition timing to suit a fuel of a lower octane rating. The ignition timing ensures that the spark plug ignites the fuel at the optimum moment.
Total ignition timing with vacuum advance connected should be no more than 36 degrees BTDC. At idle, it should be 6 to 12 degrees BTDC.
The firing order for a 5.8L F-150 is 1-3-7-2-6-5-4-8 Here is a diagram also: http://autorepair.about.com/library/firing_orders/bl-fo-7237.htm Hope that helps you!
Most stock street engines call for 6 to 8 degrees of initial advance, but this is not set in stone. Engines with longer duration camshafts and other modifications often demand more initial timing.
The ideal ignition timing occurs (at any given rpm) when maximum cylinder pressure is achieved at roughly 15 to 20 degrees after top dead center (ATDC). This is when the piston and rod combination create maximum leverage on the crankshaft.
Idle/staging is typically 55 degrees to ignite the cylinders with a rich idle mixture. Launch typically 50-53 degrees adjusted for an optimum power at launch. Sudden drop of the timing to typically 36 degrees, approx.
The timing can vary between 2 and 12 degrees BTDC, the recommended spark plugs are different and even the plug gaps vary. In most cases starting out with 12 degrees of initial advance is about right.
Best set the timing to 10-12 btdc at 700 rpm or so. The rest of the issues sounds like carburation problems.
Best Answer
All Ford V8s have the same firing order. It`s 1,3,7,2,6,5,4,8. Your number #1 cylinder is the front cylinder on the passenger side (right side) of the engine.
V8 engines use various different firing orders, even using different firing orders between engines from the same manufacturer.
However, if the spark is at no. 4 at this point, the timing is 180 degrees out. To check this, take the rocker cover off, bring pistons 1 & 4 to TDC and see which rockers have clearance. i.e., you can get a feeler gauge under both inlet and exhaust.
Ignition timing should be somewhere around 6 to 12 degrees BTDC at idle and total timing at 3,500 rpm at 34 to 36 degrees BTDC. This keeps things safe and minimizes the risk of detonation. You want the air/fuel mixture on the fat (rich) side to prevent detonation and a lean meltdown.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Timing chain positioning
ANSWER : This system is a bit complex. I can give you some instructions, but I highly recommend getting a hold of a repair manual or purchasing a yearly subscription for just your vehicle from AllData. It is only $25 for a years subscription from AllData.
There are two separate sets of marks on this system. One set is for aligning the timing chain to the camshaft gears and the intermediate shaft gear. There will be marks on the chain that raps around the crankshaft gear as well. These marks will not line up after you turn the motor over.The other marks are on the inside of the camshaft gears and align with the cylinder head parting line. If you were to draw a ling through the center of both camshaft gears, they should line up with that imaginary line.
The crankshaft key way should be aligned with the mating face of the main bearing cap. You can confirm it is in the correct position by verifying the number one piston is at top dead center. If you have removed the balance shaft timing chain, these marks really need a visual diagram to understand where they should be aligned. Without a diagram I am not very confident it can be explained very clearly.
This may be difficult to to follow, so again I highly recommend purchasing a repair manual in digital form or a book. If you feel this is over your head, I recommend the following inspection to help you out. Timing chain replacement
Good luck! I hope I was able to help you.
need a way to retain the timing chain
ANSWER : The best way to approach this unfortunately is by using a timing chain tool retainer/holder tool. You may consider having an expert from YourMechanic come to your home replace the timing chain.
At times my jeep will start fine and at times I have a hard time getting it to start. It seems like the wireless ignition node is
ANSWER : The recommended diagnostic to resolve this is a hard starting diagnostic. The work is performed by a certified mechanic right at your location. Among the first things the mechanic will check is whether required maintenance is up to date because old spark plugs, clogged fuel and air filters, and the like are potential causes of the hard starting you are describing. Other possible causes include a failing coolant temperature sensor, or bad connection to the sensor, problems with other sensors such as the cam and crankshaft position sensors, a defective fuel pump, and many other causes, all of which will be familiar to YourMechanic’s experts. With regard to the fuel pump, if the engine is not getting enough fuel it will be hard to start. If you request a hard starting diagnostic, YourMechanic will get this issue diagnosed and resolved for you.
hi- i got an estimate to replace my timing belt and water pump for my 2012 pilot. Do these figures seem right? Timing belt (35.00)
ANSWER : Hi there. That is a fairly good and detailed estimate for this type of service. It also falls within the price estimation to have a mechanic shop complete this service. However, you might want to consider a third option, of having a professional mobile mechanic come to your location and complete the timing belt replacement and water pump replacement. Simply click the blue links to receive an estimate for both services.
My car twice out of 4 times today would not start on the first time. Second time started fine. At 2 read lights it was sort of je
ANSWER : Hello, thank you for writing in. Your symptoms point towards an issue with fuel or spark. If you just had work done on the fuel system, you may wan to have your fuel pressure tested at the engine. This will let you know that the lines, filter, and pump are all working correctly. You should also have the ignition system tested. This would mean inspecting the spark plugs to make sure they are in good condition, and making sure the plugs are receiving spark. Testing for spark is best done with a simple spark tester that is inserted into the plug’s wire. If having trouble starting, turn the key to the "On" position before starting, and let it sit. This give the fuel pump a moment to prime. If you do not hear the faint buzzing of the fuel pump priming (you may have to listen closer to the fuel tank), then you may be having issues with the pump. Only further testing will tell. For more help with testing and repairs, contact our service department to schedule an appointment.
1992 Acura Legend, when the timing belt goes, is it common for the valves to bend?
ANSWER : If the timing belt break off, the engine’s pistons will hit the valves as the pistons are moving. The engine is an interference engine and can cause damage to the internals of the engine. The last time the belt came off, the engine may have been running at an idle or not under power. It is possible for the valves to be bent. What I recommend doing is performing a leak down test on the engine with a timing belt on the engine and properly timed to determine if the valves were in fact bent. If all of the cylinders have a 80 percent hold and not leaking, then the engine is fine. If there is a mass leak on a cylinder, then the piston did some internal damage. I recommend seeking out a professional, such as one from Your Mechanic, to help you check your engine’s valve train with a leak down tester.
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Billing and parts question was sent to CS for the cost of parts and labor for valve train and related parts from a broken timing belt for a 1992 Acura Legend with a V6-3.2L engine.
Car hesitates and slows down badly at times. It almost stalls at times. It keeps slow speed at 20-30KM.
ANSWER : Hello. I would need to know the year of the vehicle to know where the fuel filter is located. If this is an older model, it is located under the vehicle. Most of the newer models only have a filter on the fuel pump.
From what you are explaining, it sounds like the fuel pump is failing. When the fuel is low, the pump will get hot and a weak pump will lose pressure causing this to occur. I would usually check the fuel pressure to see if it is low, especially when the fuel level is low. If it is, then the pump needs to be replaced. If you plan on having this done, consider YourMechanic, as a certified technician can come to your home or office to diagnose the hesitation problem and guide you with repairs.
When I went to change the timing belt there were 25 teeth were missing but it didn’t jump time – how is this possible?
ANSWER : Not all the teeth need to be present in order for the pulleys to turn. However, the only way to tell if the cam and crankshaft were really in the right position relative to one another is to line them up before taking the belt off and when the engine is at TDC on cylinder 1. If all the pulleys were lined up to the marks that are embossed on the engine, the only explanation is that the few remaining teeth were stout enough to turn the pulleys without breaking. However, even that doesn’t seem likely, especially since 25 missing teeth in a row would suggest that there weren’t even enough teeth for the belt to fully engage the crankshaft timing gear, thus slippage would have been inevitable. If the 2.0L engine you have has a double overhead cam, that is an interference engine (the single cam version of the 2.0L is a non-interference engine). If you’d like a professional technician check out the engine for damage, due to the failed belt, and/or install the new timing belt, consider YourMechanic.
