97 volvo 5.7 T B I timing

[dave zeuschel]

Hi New to site i have a 97 four winns horizon 22 foot boat it has a 5.7 350 motor it has the TBI fuel injection i just replaced the motor to a brand knew 5.7 vortec motor old motor went south I am having trouble timing the motor the timing is set at 22dg to high it should be more like 8 or 10dg but when i try to turn the dist it dies the guy i got the motor from gave me a shunt tool but can not get the motor to run with it any help on what to do would be great thanks dave z

 

[rodbolt]

Re: 97 volvo 5.7 T B I timing

ok<br /> on a TBI you dont use the shunt tool<br /> you use the scan tool,laptop or jumper wire method to lock it to base service mode.<br /> look near the risers at the front of the engine. you will find a flat 10 pin connector with 4 wires in it. remove the cap and insert a jumper from the blk/white wire to the blk. this will place it in base timing mode.

 

[Don S]

Re: 97 volvo 5.7 T B I timing

Once you have it in base timing mode, you set it at 8° BTDC.

 

[rodbolt]

Re: 97 volvo 5.7 T B I timing

then dont forget to undo the jumper, yes I actually had one brought in for lack of power and all I found wrong was the jumper was still in place.

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

thanks not to sound stupid but does this methed disconect the advance system so when you move the dist it does not try to take over i can get the motor to run but when i move the dist it starts to die i ask alot of questions because i have alot of money wraped up in this thing i do not want to garbage a new motor.also what do i use to for a jumper thanks alot dave z

 

[Don S]

Re: 97 volvo 5.7 T B I timing

What you should do is invest some money in service manuals for your engine and drive. Lots of people have done damage using the hit & miss method of repair.<br /><br />To answer your question, Yes, it prevents advance movement so you can set timing.

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

Hi I have a selco book on my motor but it is not very help full on the timing part you must be talking about the books that you get from volvo i have heard of these i wiil look in to them thanks.Also what should I use to jump the wires can any help. Thanks DZ

 

[Don S]

Re: 97 volvo 5.7 T B I timing

Use a small wire that will make contact, but not damage the connections in the DDT port.<br />You will also need the model number of your engine to get the proper set of manuals from Volvo.

 

[rodbolt]

Re: 97 volvo 5.7 T B I timing

I use a piece of solder mashed flat with a hammer cause usually I cant find the one I made with the pins. that or I have the DDT attached. but a set of manuals from volvo is imperative if you wish to do your own work.

 

[4.3sunbird]

Re: 97 volvo 5.7 T B I timing

Im using the delco ign like the tbi motors <br />my with timing locked I set at 10 degrees <br />hooked back up normal I see about 26 or so timing at idle<br /><br />set it somewhere in the 26-28 degree setting then lock it down and set it right <br /><br />if yours advances the same as mine with your 22d setting when you lock the timing down you'll be too low and will probly have it cut off or not want to hardly run at all<br /><br />I use shunt to lock mine down <br /><br />or just rev it to 4000 rpm and set it at 32 degrees timing and be done with it ... no fancy wire jumping to do that

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

Hello rodbolt you said earlier that the plug had 4 wires in it I looked at mine and it had 5 wires if it is the plug we are talking about.Is it where you would hook up a scan code reader the plug I saw was black and had some orange or red on it the two wire you spoke of were in the one corner of the plug let me know if you would.Is it possible that it is called DLC (data link connector).Thanks DZ

 

[Don S]

Re: 97 volvo 5.7 T B I timing

Sunbird, don't be telling someone with a TBI engine how to set their timing by your methods used on a carbed engine. Just flat won't work and he could end up messing up his engine.

 

[rodbolt]

Re: 97 volvo 5.7 T B I timing

not only is sunbird an engineer he is a brillant one at that. he forgot that without the shunt max and idle advance cannot be set due to it changes with RPM. thats the whole reason to lock out the electronic advance of the module. it blocks the REF Hi signal and shuts down spark advance in the module.<br /> but the best fastest and most reliable method is to use the service manual procedures. it rarely fails.<br /> its a good thing the module is smarter than sunbird and goes into cranking mode when he hits the key, 22*BTDC on a warm motor start has been known to break stater housings. if not we would not need spark adance at all. it would just set and fly.

 

[4.3sunbird]

Re: 97 volvo 5.7 T B I timing

ok so whats wrong with the post I did <br /><br />he mentioned it died when timing was dropped so I gave him a place to set it before locking the advance to keep from it stalling out <br /><br />never did I say leave it there <br /><br />yes advance works off rpm thats where I came in with set it at 32 degrees at 4000 rpm ... put a dial in light on it and check it out once its locked down and set <br /><br />tbi motors ...I have 3 of them in 3 of my trucks <br /><br />Im running a tbi ignition in my carb motor also .. the module dont know it its carbed or injected <br /><br />want to worry about a degree or 2 might want to put a degree wheel on the motor and mark the balancer at exactly tdc then since I have seen very few chevy balancer lines that are dead on <br /><br />you guys are being hard on me there but I bet you when he locks the advance in the dist and sets it from 8-10 degrees timing and then unlocks the timing it will be high 20's timing at idle<br /><br />who really cares for exact timing at idle anyway theres hardly no load on the motor <br /><br />32 degrees at full advance is plenty low enough for a full load on a 350 based engine be it a 4.3 or a 5.7

 

[newport dave]

Re: 97 volvo 5.7 T B I timing

Don't try to set the timing by any method other than putting the engine in Base Timing Mode and setting the timing to the OEM spec. At idle, the ECM uses ignition timing to conrol engine speed. If you look at the graph below you can see that the timing will be all over the place when not in Base Timing mode.<br /><br />The engine probably won't start in base timing mode. On a MEFI1 system, you have to start the engine, advance the throttle to about 1400 RPM, and then place the jumper wire (paper clip works fine also) between the "A" and "B" terminals on the Data Link Connector (DLC). Then set the base timing.<br /><br />Rodbolt,<br />When in Base Timing Mode, the REF HI signal is not blocked, it is the base timing signal. The ECM directs the REF HI signal directly to the IC circuit. <br /><br />Dave<br /><br />

 

[rodbolt]

Re: 97 volvo 5.7 T B I timing

the REF hi is not applied as the BYPASS circuit never recieves a 5 volt signal forcing the module into module mode. so the signal is technically still generated its just not acted upon as the system is forced into module mode. but I guess the signal would still be there from the signal converter.<br /> but in anycase if you attempt to "power" time the system bad things can happen. last one I looked at that had been power timed actually had about 42* advance at 1800 and would actually spark knock. its difficult to get a TBI to spark knock but this one would. they tried setting the timing by going WOT and playing with the distributor. in module mode IC mode and ECM modes are cancelled. so they only way to correctly set the timing is by the service manual procedure. aint no other way.

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

Hi the volvo manuals are not in the cards wright now but soon. All I want to do is get the timing set the wright way and also is this true that the timing will read in the 20s not 8dg when I unhook the jumper wire and re check it please answer thanks DZ

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

Hi the guy that was helping me try to time the motor has bailed on me if I could get one of you guys to give me a step by step of how to time this motor that would be great I have a pretty good idea of how to do it but I dont want to mess it up.Thanks alot DZ

 

[Don S]

Re: 97 volvo 5.7 T B I timing

Here is the information right out of the Volvo manual.As I said earlier, the timing should be at 8° BTDC using the procedure below.<br /><br />1. Connect a 12-volt timing light to number 1 spark plug lead, and <br />use the timing light following the manufacturer’s instructions.<br />NOTE: Be careful not to puncture the wire or boot as this would<br />cause a high voltage leak. Make sure that spark plug wires are<br />pushed all the way down into the distributor cap terminals and<br />onto the spark plugs. Nipples must be firmly pushed over the<br />terminals, and boots over the spark plugs. Failure to do so can<br />result in ignition of fuel vapors in engine compartment or bilge,<br />and may result in fire or explosion.<br />2. Start engine and leave running until thoroughly warmed up.<br /><br />Setting Timing<br />The timing procedure for Delco DI systems requires shunting<br />(shutting off) the electronic spark advance.<br />1. Start engine and manually set idle speed to 1000 RPM, then do<br />one of the following:<br />At the 10-way DLC (Data Link Connector), starboard front<br />engine, install a Trouble Code Tool and turn it on - OR<br />If a Code Tool is not available, use a jumper wire and<br />connect the white / black wire to the black wire inside the<br />connector.<br />2. Direct beam of timing light onto timing grid. Loosen distributor<br />clamp, then turn distributor slowly by hand until timing mark is set at<br />the appropriate timing figure.<br />3. Recheck timing mark; reset if necessary. Tighten clamp bolt.<br />4. Stop engine. Remove jumper lead or Trouble Code Tool.

 

[dave zeuschel]

Re: 97 volvo 5.7 T B I timing

Thanks alot Don S., Rodbolt, Newport Dave & Sunbird that should help out alot again Thank you very much very glad there is a sight like this for guys like me.DZ Will give you a response when I get it timed.DZ